Networks and Governance in Trade Associations : AEIC and NELA in the Development of the American Electricity Industry 1885-1910 Chi-nien Chung Department of Sociology Stanford University cnchung@leland.stanford.edu January, 1996 Published in the International Journal of Sociology and Social Policy, 17 (7/8):52-10, 1997 2 Introduction In this paper, I demonstrate an alternative explanation to the development of the American electricity industry. I propose a social embeddedness approach (Granovetter, 1985, 1992) to interpret why the American electricity industry appears the way it does today, and start by addressing the following questions: Why is the generating dynamo located in well-connected central stations rather than in isolated stations? Why doesn't every manufacturing firm, hospital, school, or even household operate its own generating equipment? Why do we use incandescent lamps rather than arc lamps or gas lamps for lighting? At the end of the nineteenth century, the first era of the electricity industry, all these technical as well as organizational forms were indeed possible alternatives. The centralized system we see today comprises integrated1, urban, central station firms which produce and sell electricity to users within a monopolized territory. Yet there were visions of a more decentralized electricity industry. For instance, a geographically decentralized system might have dispersed small systems based around an isolated or neighborhood generating dynamo; or a functionally decentralized system which included firms solely generating and transmitting the power, and selling the power to locally-owned distribution firms (McGuire, Granovetter, and Schwartz, forthcoming). Similarly, the incandescent lamp was not the only illuminating device available at that time. The arc lamp was more suitable for large-space lighting than incandescent lamps; and the secondgeneration gas lamp--Welsbach mantle lamp--was much cheaper than the incandescent electric light and nearly as good in quality (Passer, 1953:196-197). The major question then becomes why the centralized/incandescent lighting (electricity) system was adopted among these alternative paths. Through what process and by what mechanisms did this development template become the dominant one in the electricity industry? Governmental data indicates that as early as 1915, this template had already become the prevailing structure among electric utility firms in America. Almost every major electricity firm had similar internal structure and external relationships (United States Departments of Agriculture, 1916: volumes 8, 9, 10). The first successful incandescent lamp was devised by Edison in 1879 and the first commercial central electricity station was launched in 1882 at Pearl Street, New York City. What happened during the period from 1882 to 1915 that produced the dominant status of the centralized/incandescent lighting (electricity) system. The usual answer to this question relies on either market or technical factors, arguing that the most efficient technical and/or organizational system is able to dominate the market, become the model of the industry, and finally shape the whole industry (Arthur, 1984, 1989, 1994a and 1994b; Chandler, 1977, Williamson, 1975, 1985). One main disadvantage of such market-centered explanations is that they neglect the role of non-market factors such as trade associations, social networks, state, or other institutions. Our evidence2 indicates that trade associations 1 "Integrated" means an electricity system which includes all three major components of an electricity business--generation, transmission, and distribution--within one firm. 2 The data employed in this paper was initially collected by Patrick McGuire and Mark Granovetter for their upcoming book (McGuire, Granovetter, and Schwartz, forthcoming). 2 3 played a significant role in path selection and expansion in the development of the American electricity industry. The two trade associations under examination--the Association of Edison Illuminating Companies (hereafter, AEIC) and the National Electric Light Association (hereafter, NELA)--were actually the major governance mechanisms of the industry during 1885-1910. More importantly, there was a set of preexisting social networks that dominated the slate of officers and the executive committee of these two associations. This set of networks, which I will call the "Edison/Insull associates", occupied the most influential positions in the associations' power circles and used this advantage to spread their blueprint of the development of the electric enterprise-the centralized/incandescent lighting (electricity) system. This paper challenges the market-centered theories by showing the power of non-market factors--social networks within the trade associations--on technology choice and organizational development within the American electricity industry. By showing the network structure within trade associations, this paper also challenges the current theory of associative governance (e.g., Campbell, Hollingsworth, Lindberg, 1991). Although this theory provides many insights into the operation of an association and its role as a distinctive governance structure in modern economies, I argue that it too understates the significance of social networks in the process of associative governance. In the second section of this paper, I review the market-centered theories and the associative governance theory, and show how they fail to deal with the significance of social structure in explaining industrial development. Following this discussion, I elaborate the social embeddedness approach. In the third section, I provide a brief historical review of the electricity industry, including the trade associations , the major firms, and the central actor of the Edison/Insull network--Samuel Insull.3 The fourth section focuses on network methods which enable us to identify the influential actors within the executive committee of AEIC and NELA. The fifth and the sixth sections report the results of using these network methods to analyze the data derived from the proceedings of these two associations. Section seven delineates how the Edison/Insull network was constructed and under what historical contingencies this network was mobilized to occupy the influential positions in the trade associations. Theories Neoclassical minimalism on technology choice and organizational development One breakthrough in the economists' explanation of technology selection is Arthur's concept of "lock-in by historical small events" (Arthur, 1984, 1989, 1994b). This concept brings in historical contingency and hence enables economists to explain why markets don't always cause the "right" technology to emerge. The basic argument is that, under increasing returns to scale, if any one of the two or more competing technologies accidentally pulls ahead in the market by random historical events, this technology may 3 Insull, a young man born in London, who became the personal secretary of Thomas Edison when he was only twenty-one years old. Later, by serving on different positions within the Edison company system, he became a focal liaison among the Edison/Insull associates. The history section will provide a detailed description of his biography. 3 4 accelerate enough for it to corner the market and finally become locked-in because of economies of scale. This unintentional result is mainly based on what Arthur calls positive-feedback loop--the more people adopt a technology, the more it improves and the more attractive it is for further adoption (Arthur, 1994a:10-11). In other words, "the economy, under increasing returns, can dynamically lock itself in by small historical events to a technological path that is neither guaranteed to be efficient, nor easily altered, nor entirely predictable in advance" (Arthur, 1994b:25). A good example of this theory is the QWERTY typewriter keyboard (David, 1985). The ideas of positive-feedback and lock-in are fruitful but the concept of historical events is problematic. Ascribing the initial lead of a specific technology to small "random" events is to dodge the expected trap of market-centered explanations. When the marketchosen technology is not always the most efficient one, in order to keep their favorite explanatory mechanism--the market--economists bring in historical contingencies but treat them as random and "small" factors. This is because if these historical factors are treated seriously and used to explain technological evolution, economists ironically undermine their habitual hypothesis--market efficiency. In order to maintain their conviction and at the same time make the technology-selection model work, they discovered a catch-all excuse--historical small events. They ascribe all the relevant social complexities to the scapegoat in order to maintain a clean market-centered model (Hirsch, Michaels, and Friedman, 1987). In doing so, they neglect certain structural forces which might be mainly responsible for the selection of specific technologies. These remarks can also be applied to market-centered theories of organizational development. For instance, Chandler (1977) argues that managerial hierarchies emerged when market conditions became competitive and volatile and production process became bigger and more complex. The dominant organizational form in an industry is thus the most efficient one. Williamson (1975, 1985) modifies Chandler's theory and takes economic transaction as his unit of analysis, arguing that the organizational form that minimizes transaction costs survives. Williamson uses this theory to explain the emergence of multi-level hierarchical organizations. Such market-centered theories, consistent with their roots in neo-classical minimalism, adapt a logic that severs technological and organizational development from social and historical contexts. Using Granovetter's (1985) concept of social embeddedness, I propose that these market-centered theories explains the evolution of industries by assuming that economic actors proceed as if in a social vacuum, and hence both the role of the actor and the social environment are under-estimated. This paper shows that the "lock-in" of the centralized/incandescent lighting system in the American electricity industry was not due to small random historical events or market efficiency but rather to the strength of social structure. I will demonstrate in the following sections that there was a set of preconnected actors, Edison/Insull associates, who, based on the previous experience of working together, shared the same template of the development of the electricity industry. They occupied most of the influential positions within the trade associations and used AEIC and NELA as vehicles to make their preferred technology/organization paths dominant. 4 5 "Great man" theory of electricity industry development In contrast to market-centered theory's under-estimation of human agencies and their social structure, there is at least one explanation of the electricity industry which overestimates the role of human agency. Hughes's (1983) account of electric power systems depends largely on the actions of those inventors, entrepreneurs, engineers, managers, and financiers involved in the industry. He describes the industry development as the result of brilliant men's efforts to find solutions to economic and technological problems (McGuire, Granovetter, and Schwartz, 1993:215). "The model identifies the particular capabilities and interests of the professionals who presided over system growth in each of the phase" (Hughes, 1983:14). Although human agents and their social environment play a significant role in the development of electric systems, their actions and social connections are not unconstrained. As stated by McGuire, Granovetter, and Schwartz (1992): "Human agency is overestimated in Hughes's book but immensely underestimated in the market-centered theories". It is true that actors and their collective actions are critical to technology selection and organizational development, but only within specific historical and structural constraints. I show in the last section that the Edison/Insull networks were able to mobilize successfully only under certain historical circumstances. Associative governance and social networks Recent studies of trade associations and economic governance (Streeck and Schmitter, 1985; Campbell, Hollingsworth, Lindberg, 1991; Hollingsworth, Schmitter and Streeck, 1994) have increased our understanding of the operation of trade associations and how they influence industrial development. Unlike those market-centered models which neglect all other possible types of economic governance in industry4, this theory treats trade associations and networks as two distinctive governance structures (mechanisms) in the capitalist economy. This theory conceptualizes governance structures as those institutions within an industry that coordinate the transactions within as well as outside the industry and thus keep the economic activities of this industry going. This conceptualization focuses attention on the major actors and their relationships5 within an industry. By doing so, this theory enables researchers to explore the static structure as well as the dynamic evolution of an industry. Following this conceptualization, I propose that AEIC and NELA were the dominant governing mechanisms of the electricity industry in the period of 1885-1910. There are 4 Economic governance theory proposes five types of governance mechanism: Market, Hierarchy, Community, Association, and Networks (Hollingsworth, Schmitter, and Streeck, 1994:5-8, Hollingsworth and Boyer, 1995:Figure 3). 5 The relevant actors in a governance structure, whether in a individual form or a organizational form, include the focal actor (i.e., the producer), the other actors (e.g., competitors in the same industry, customers, suppliers, labor, finance institution, etc.) and the state (i.e., government agency). The relevant transaction relationships include the division of labor among the actors within the industry, their transactions with their suppliers and customers, and their procurement of capital, labor, and technology (Traxler and Unger, 1994:186). 5 6 three types of evidence to support. First, the emergence of these two associations resulted from the collective effort of the lighting companies to resolve their common problems, such as securing the necessary electrodes for their lighting system, standardizing diverse illuminating equipment, etc.6 Secondly, during the period of 1902-1914, trade associations played an even more important role in coordinating the different transaction relationships within and outside the industry. For instance, NELA dealt with the labor strike in 1903 by extending membership to leaders of the worker organization and creating a professional association to oppose striking, agitation, or compulsion. AEIC dealt with the energy-supply problem by proposing a standardized purchase practice. Moreover, both AEIC and NELA handled the problem of negotiating with the generating equipment manufacturers by choosing the type of equipment and standardizing the methods of repair, construction, operation, and even terminology. Thirdly, in the 1890s, NELA was extensively involved in the relationship between the industry and the public. The association cooperated with educational institutions, distributed pamphlets, established connections with other associations, and even organized women's clubs (United States Federal Trade Commission, 1928:234-250). All these efforts tried to create a favorable public attitude toward the industry. In general, it is safe to conclude that the trade association was the major intermediary in relationships within and outside of the electricity industry during 1885-1910. Although I adopt some fundamental concepts from the theory of associative governance in this paper, this theory's treatment of social networks is questionable. It has not paid sufficient attention to the social structure in which the associative actions are embedded. Under certain circumstances, networks could be a distinctive and independent governance mechanism, as proposed by the economic governance theorists. For most situations, interpersonal networks are intertwined with the other governance structures to a significant extent. Although each of these mechanisms7 could be the apparently official, formal dominant coordinating structure in a specific industry, I believe that since economic actions and economic institutions are embedded in social relations (Granovetter, 1985, 1992), there are always unofficial, informal network effects within the dominant mechanism. For instance, Macaulay's (1963) research shows the extensive use of non-contractual relations in market transactions which are supposed to have only strict contracting, arm's-length bargaining and price bidding elements. Similarly, Dalton's (1959) research demonstrates the significant effect of informal structure on the operation of a private hierarchical business firm. Although the firm has a formal organizational chart, it is usually the informal structure that allow "the plant's work to get done" (Granovetter and Swedberg, editor's note, 1992:315). Besides Dalton's research, a similar argument with more recent evidence was offered by Krackhardt (1992, 1993). As to the public hierarchy, there is much evidence showing how interpersonal relations influence the state as a governance mechanism. A famous instance is the relationship between the steel industry and the White House.8 Following the discussion above, I am going to 6 I will elaborate more about this in next section. See note 4. 8 This relationship started from "President Theodore Roosevelt's 'entente' relationship with Judge Elbert Gary, chairman of U.S. Steel, through William Howard Taft's endorsement of an antitrust suit against U.S. Steel and Franklin D. Roosevelt's denunciation of the industry as a 'concealed cartel system'..." (O'Brien, 1994:58). 7 6 7 extend the network argument into the sphere of association governance, an arena that has not yet been systematically investigated. I argue that while AEIC and NELA were two apparently dominant formal governance structures in the American electricity industry during 1885-1910, the interpersonal networks within these associations had critical effects on governance practices, and hence influenced the development of the whole industry. History Electricity was new and little understood until 1877. Before then, illumination was largely dominated by gas lighting. By 1875, there were over four hundred gas companies in America with most of them located in the larger cities (Passer, 1953:12). Electric lighting started from the development of arc and incandescent lighting and was not commercially available until 1882, when two small generating stations--the Pearl Street steam station in New York and the hydroelectric station in Appleton, Wisconsin--were launched (United States Federal Trade Commission, 1928:159). The year of 1882 hence marks the inception of the electricity industry. Electricity was used only for lighting at the beginning and not until the late 1890's did improvement and inventions in various electrical apparatuses allow the application of electricity for industrial, commercial, and transportation use. The new industry grew at an astonishing speed in the following thirty years. The two small stations in 1882 grew to 3,620 electrical central stations with 1,845,084 kilowatts generating capacity by 1902. By 1912, after thirty years development, there were 5,221 stations with altogether eleven billion kilowatts capacity (United States Federal Trade Commission, 1928:262). The growth of the manufacturing sector and the increasing use of mechanical power in the American economy combined with the concentrated urban population during 1875-1900 provided an extremely favorable environment for the development of the electricity industry (Passer, 1953:7). As mentioned earlier, the electrical central station industry started from two different and technically incompatible lighting systems--the arc and the incandescent systems. Each had distinctive dynamos, conductors, and lamps. The arc lighting system used carbons as electrodes in arc lamps. The leading companies in this system included Brush, ThomsonHouston, Weston, and American Electric and Illuminating. In contrast, the incandescent lighting system used the Edison incandescent lamp and the Edison chemical meter in the system. The Edison company (consolidated by GE after 1892) and Westinghouse were the two major firms in this system. These two systems were competitors for market share, and the emergence of NELA and AEIC was largely related to the competitive interfirm relationship within and between these two systems. NELA was formed in 1885 by lighting companies in the arc system to respond to an attempt by the arc carbon manufacturers to establish an alliance for price agreements (Passer, 1953:60). We thus expect that the membership and leadership structure in the early years of NELA largely reflected its origins in arc lighting firms. According to Nye (1990), there was a small group of elites from the Electric Club who dominated NELA in the initial era: "Six of the seven officers of NELA were also in the Electric Club in 1888; apparently that there was close informal cooperation between the two" (ibid.,: 173). Since the membership data of 7 8 the Electric Club are unavailable, we don't know exactly who these people were. Yet as I show later that this earlier leadership structure was replaced by the Edison/Insull associates after 1898 when Samuel Insull was elected as the president. As to AEIC, two reasons have to be mentioned for its emergence. First, it was a response to the formation of NELA. Since the Edison incandescent lighting system was in competition with the arc system, the companies of the Edison-system organized AEIC to cope with the competition from NELA. Secondly, this association was sponsored by the Edison manufacturing company to facilitate the "interchange of opinion" (McMahon, 1985:1213) regarding the technical standardization as well as management skills among the licensee Edison lighting companies. In order to fully comprehend this dynamic interfirm relationship, it is worth briefly summarizing the history of the Edison system. Starting from 1876, Edison employed about 200 technicians and inventors to conduct research on a new lighting device. To support their research, he and his associates formed the Edison Electric Light Company (hereafter, EELC) in 1878, which was under the financial auspices of J.P. Morgan and several affiliated financiers such as William Vanderbilt. In 1879, they invented the first incandescent lamp and in 1880 formed the Edison Electric Illuminating Company (hereafter, EEIC) to manufacture and market their centralized/incandescent lighting system. In 1882, Edison installed the first central station at Pearl Street in New York City. On the basis of the technical and commercial experience gained in the installation and operation of the Pearl Street station, the Edison company promoted licensee central stations in most of the large cities of the United States. By August, 1886, there were 58 stations and 149,900 lamps in use. Most of them were in the large cities such as New York, Chicago, Boston, Brooklyn, Detroit, and Philadelphia (Passer, 1953:121). The proliferation of Edison lighting companies was an important reason for the start of AEIC. However, control over this lighting system laid not with Edison but with the patent-owner. In order to attract sufficient capital for the invention, Edison agreed to assign all his inventions and improvements to the EELC. The EELC hence became a firm whose primary activity was the holding and licensing of the Edison Electrical patents9. Under the operation of this system, the EELC actually made the licensee central station its customers. If the licensee stations were successful and prospered, promotion of additional central stations would proceed faster, widening the market for the Edison equipment. It was against this backdrop that the AEIC emerged: "To improve the management of the central stations and to bring them into closer contact with the Edison manufacturing companies, the AEIC was formed in 1885" (Passer, 1953:122). From the brief history reviewed above, it is clear that the membership of AEIC was relatively small. Membership was limited to the sponsor--EELC, Edison-associated manufacturing firms, and other Edison lighting companies. Its leadership structure was also a tightly-knit group. A review of the Association's officers from 1885 to 1895 indicates that they were overwhelmingly from firms in New York and Boston, and owned 9 "The license was exclusive for a specified territory--usually a city or a county--and included the right to operate an Edison central station, to sell isolated plants, and supply them with renewal lamps and repair parts. The local licensee company thus possessed the exclusive rights to operate a central station in its territory, to sell all Edison lighting equipment in its territory, and to sell Edison lamps" (Passer, 1953:118). 8 9 by the same financiers who sponsored the EELC and subsequently GE (McGuire, Granovetter, and Schwartz, forthcoming). Although these financiers supported Edison's invention of incandescent lamps, they had different ideas about the development strategy of the incandescent lighting system. They preferred a decentralized rather than the centralized, integrated system proposed by Edison. The reason is that selling isolated generators and lamps would bring in immediate profits without additional investment. To continue to invest in other facilities needed by the centralized system was risky for them although Edison believed, and later proven right, that the centralized system would secure much more profit after the whole system was established (for details, see McGuire, Granovetter, and Schwartz, 1993). The slate of officers from 1885 to 1895 clearly indicates that these financiers and their affiliates controlled AEIC during this period. Yet as I show later, this dominant group changed significantly after 1896--the year Insull was elected to the presidency. Edison/Insull associates occupied most of the influential positions and reshaped this association toward the direction of centralized version of industry development. Before considering the key figure of Samuel Insull, one must consider why it was important that Edison/Insull associates dominated these two associations? As mentioned earlier, these associations were the main governance mechanism of the electricity industry during 1885-1910. Their influence on the industry was profound and broad-ranging. Within AEIC, the six leading Edison lighting firms, located in New York, Boston, Chicago, Detroit, Brooklyn, and Philadelphia, were the main innovators behind technical and organizational change. Other firms treated their accomplishments as worthy of emulation (McGuire, Granovetter, and Schwartz, forthcoming). Those industry practices that were advocated in AEIC would be respected by other utility firms. For NELA, the potential influence depended on the relatively broad and diverse background of their participants. This is more obvious after 1902 when Insull and his associates rewrote the by-laws to create a more hierarchical classification of membership and thus promoted the identity and influence of the central station within the association.10 More importantly, this transformation allowed non-Edison and even non-Westinghouse central station firms into the association. According to a report of the Federal Trade Commission in the 1930s (United States Federal Trade Commission, 1934:23), NELA was "the largest, most important utility association.....its membership in 1926 covered something over 90 percent of the total energy generated in the country". A combination of the innovation of AEIC and the pervasiveness of NELA provided the best platform for Edison/Insull associates to influence the whole industry. Because of the potential influence of these two associations, whoever was in their executive committees was therefore in an important position. Based on the available data, we know that the executive committee in NELA was the governing body of the association. It had the power of selecting and constructing the meaningful issues during the semiannual or annual meeting. According to NELA's constitution in 1887: 10 They created a membership hierarchy which had five categories of membership and different levels of dues adjusted to the category level and firm size. This reorganization gave disproportionate economic and political influence to a few large urban centralized firms who became the principal sources of NELA funding (McGuire, Granovetter, and Schwartz, forthcoming). 9 10 The Executive Committee shall be the governing body of the association....They shall meet from time to time and shall report upon application for membership, gather and prepare information upon topics of interest and arrange for their discussion at the several meetings of the Association (NELA proceeding, 1887). We may therefore conclude that occupying an influential position in the executive committee of AEIC and NELA gave the Edison/Insull associates the opportunity to influence the American electricity industry. Having sketched the history of the industry, the trade associations and the firms, it is now appropriate to turn to the actors. I will demonstrate later that the operation of AEIC and NELA after 1898 largely hinged upon a set of pre-existing social networks. The key actor of this network was Samuel Insull. Insull, a former secretary for Edison's technical representative in Europe (Edward Johnson), became Edison's secretary in 1881 when he was twenty-one years old. As the private secretary to Edison, Insull was the conduit through which flowed all correspondence between Edison and his business world. Through this key structural position, Insull was intimately related to other participants in the creation of the emerging electrical industry (McGuire, Granovetter, and Schwartz, forthcoming). In 1883-1884, Insull served as chief executive of the Edison Construction Company, a company founded by Edison in 1883 to facilitate the construction of central stations. During this period, Insull met with many of the local investors and executives who later became members of the AEIC (Insull, 1924: 39). In 1886, Insull was put in charge of the Edison Machine Works at Schenectady, NY, where he became acquainted with several young electrical engineers who later were leaders of the major Edison lighting firms and important figures in both AEIC and NELA. Due to Insull's special career positions, most members of the Edison/Insull networks had worked with him previously. His central position will be identified by the network methods discussed in the next section, and his strategic influence will be elaborated in the AEIC and NELA sections. Methods11 In order to identify the influential groups of persons within AEIC and NELA executive committees, three network methods are employed in this paper: centrality degree, automorphic equivalence, and blockmodel. Each of these methods explores a different level of information regarding the structural relationship of these influential groups. This section explains the definition and characteristics of each method as well as the potential information embraced in these methods. Centrality degree 11 The network notation of the following section is largely derived from the network analysis handbook by Wasserman and Faust (1994). 10 11 Influential actors are those who are extensively involved in relationships with other actors. Centrality degree is a measure for each actor's level of involvement. To fully utilize this measure, three related indices need to be considered12. First, the crude centrality degree shows how many actors directly contact the focal actor. It ranges from 0 to g-1 (supposing there are g actors in the network). A 0 degree represents an isolated actor and a g-1 degree means a star actor. The second index is the standardized centrality degree. It is obvious that the crude centrality degree is dependent on the group size--g and hence is difficult to compare across different networks. To overcome this drawback, I standardize the crude degree through dividing by g-1. The standardized centrality degree thus is the proportion of other actors who are connected to the focal actor. This index is independent of the group size and can be compared across networks of different sizes (Wasserman and Faust, 1994:179). The minimum value of this index is also 0 but the maximum value is 1. While the first two centrality indices concern individual actors, the third index is about centralization at the network level. This network-level measure allows us to compare different networks as a whole. The larger the index is, "the more likely it is that a single actor is quite central, with the remaining actors considerably less central. Thus, this group-level quantity is an index of centralization, and measures how variable or heterogeneous the actor centralities are....It is (roughly) a measure of variability, dispersion, or spread" (Wasserman and Faust, 1994:176). The range of this index is between 0 and 1. A 0 means every actor's centrality degree is exactly the same; no one is more central than the other. On the other hand, it equals 1 if and only if one actor completely dominates the network (Freeman, 1979:228). UCINET413 calls this index Network Centralization . Although centrality degree is simple and straightforward, it is crucial to this paper in the sense that the other two methods are both based on it. The major reason for its importance is the coincidence between its conceptual properties and the purpose of this paper. Serving in the executive committee in the same year allows actors to communicate with each other. According to the constitution of NELA mentioned earlier, when there were many policy issues that needed to be discussed in the associations' periodic meetings, serving together in the executive committee provided an opportunity to communicate about which issues should be presented to the members of the association. This "screening" privilege gave the members of the executive committee the power to influence the direction of the trade association and subsequently the industry. In the process of communication in the committee, "a person who is in a position that permits direct contact with many others should begin to see himself and be seen by those others as a major channel of information" (Freeman, 1979:219-220). In this conceptualization, influential persons are those actors who have high centrality degree and hence have the most opportunity to receive as well as to spread relevant information and ideas. 12 For the mathematical presentation and the algorithms of these indexes, see Freeman , 1979. UCINET4 is a computer software designed for the purpose of network analysis (Borgatti, Everett and Freeman, 1992). All network analyses of this paper were carried out with this program. There are also other programs available for the same purpose such as STRUCTURE, SNAPS or GRADAP, consult Wasserman and Faust, 1994: 735-737 for more information. 13 11 12 Automorphic equivalence It is often a group of influential persons rather than a single star that can dominate the whole association. Since centrality degree only informs us of the level of involvement at the individual level, we need another method to group people. One major procedure to detect the subgroups within a network is automorphic equivalence. It not only groups actors by their centrality degree, but also by structural location in the network.14.The major idea behind this procedure is the principle of substitutability--equivalent actors should occupy indistinguishable structural locations in the network (Everett and Borgatti, 1988). In general, to be automorphically equivalent, actors are identical with respect to all graphic theoretic properties (Borgatti and Everett, 1992). The same centrality degree is surely one of these but there are also other properties, such as belonging to the same number and size of cliques. The only thing that can differ between automorphically equivalent actors is the "names" or "labels" attached to them (Wasserman and Faust, 1994:472). However, it is difficult to find a group of people that are exactly automorphically equivalent in practice. I therefore measure the degree of automorphic equivalence between pairs of actors and cluster the people with similar degrees of equivalence into the same classes. Blockmodel After identifying automorphically equivalent classes of actors, to explore the structural relationships within and between these equivalent groups is important , since there might be two or more contending groups existing simultaneously and competing for the leadership of the associations. The automorphic equivalence procedure only groups the actors that have a similar level of equivalence and does not consider the structural relationships among these groups. In order to examine these relationships, the blockmodel procedure is adopted. For the specific purpose of this paper, I manipulate the blockmodel procedure in the following ways. First, permute the rows and columns of the actor mode (actor-by-actor) matrix so that the actors in the same equivalence classes are arranged side by side, and then divide the original matrix into several submatrices according to the equivalent classes. Secondly, calculate the density for each of these submatrices. If the submatrix density is greater than the grand density of the original matrix, a 1 is assigned to the block; if not, a 0 is assigned. As a consequence, a smaller image matrix appears. The onecell in the image matrix means the presence of a tie from the row position to the column position; the zero-cell means absence of this tie. In other words, the blockmodel is a simplified representation of a network that captures some general features of a network's structure (Wasserman and Faust, 1994:396, 408). The pattern of ties between and within these blocks usually present theoretically important structural properties (see White, Boorman, and Breiger, 1976). 14 For the algorithm of automorphic equivalence, please consult Everett, 1985 and Everett and Borgatti, 1988. 12 13 Data and coding The relational data for the actors in the executive committee of AEIC and NELA is derived from the official proceedings of these two trade associations. These proceedings list every member of the slate of officers and the executive committee for each meeting. For AEIC, there were two meetings per year during the period of 1885 to 1889. After 1890, the association met annually until 1910. Hence, there were 31 meetings during 1885-1910. Because the executive committee membership is not available for the first meeting in 1885, we have the membership for 30 meetings rather than 31 meetings for the 26-year period. This data set is coded as a two-mode affiliation matrix of actors by years. The 1's shown in the matrix means that the person in a specific row served in the AEIC executive committee in one specific year; if there is a 0 rather than a 1, it means this person did not serve in the committee in that year. I then transform the two-mode matrix into a one-mode matrix of actors by actors; the value in the cells of the new matrix indicates how many times a pair of specific actors served together in the executive committee within the 30 meetings. After this, I dichotomize this actor-by-actor matrix by using 1 as the cut-off value (values greater than or equal to 1 are replaced by 1, otherwise 0 ), I then get another matrix in which the 1 means that a pair of actors served together at least once in the 30 executive committee meetings during 1885-1910. During the transformation from the actor-by-year matrix to the actor-by-actor matrix, the information of year is lost. It is no longer possible to identify in which year a specific pair of actors was connected. We only know how many times they have sat on the committee together within the 30 meetings. On the other hand, after dichotomizing the actor-by-actor matrix, the information of frequency disappears. I am now unable to detect the strength of their connection; only whether or not they were connected during the 26-year period. However, these two procedures do not decrease the validity of our analysis, because the main objective of this paper is to identify the influential groups in the two associations within the 26 year period; the focused target is the group of actors most extensively connected by other actors. The specific year the influential actors were connected or the strength of their connection is not critical in this respect. Yet compressing a data set that consists of 26 years and 30 meetings is still problematic for the purpose of detecting the leadership structure of the association, because the structure might change significantly during this time period and hence the research outcome shown is only a congealed image of a dynamic structure. One way to overcome this drawback is to separate the data into several subsets15. The history of the associations suggests a natural cut-point for the data set. In the case of AEIC, since Insull became the president in 1896, I separate the data into two subsets--1885-1895 and 1896-1910. I then do the same transformation and dichotomization mentioned above to these two submatrices. Analyzing and comparing these three sets of data enables us not only to examine the evolution of the leadership structure but also to test the hypothesis of whether the structure changed significantly after Insull's presidency. 15 Doreian (1980, 1986) and Wasserman and Iacobucci (1988) propose different ways to overcome this problem. 13 14 For NELA, there were two meetings per year during the 1885-1891 period. Since the data of the official crew and executive committee membership are not available for 1887a and 1888a,16 I have a total of 31 meeting records. The coding, transformation, and dichotomization procedures are identical to those for AEIC data. The only difference is the cut-point. Since Insull became the president of NELA in 1898, I separate the data into two subsets--1885-1897 and 1897-1910 . AEIC: 1885-1910 Centrality degree [Table 1 is about here] Table 1 lists the Degree and the StdDegree for each actor. As already mentioned, the former index means how many other actors have connection to the focal actor and the latter index is a standardized index which represents what percent of other actors are connected to the focal actor. Table 1 demonstrates that the actors in the later period have more extreme degree than the earlier period actors. For instance, in the later period, Edgar, Insull and Lieb have contacts with every other actor. On the other hand, Smith-A, who is the most central person in the earlier period, has contacts with only 54% of other persons. This fact is also reflected in the three group-level indicators: mean, standard deviation, and network centralization. All of them are higher in the later period. It is obvious that the later period is an occasion of denser interaction and connection. We thus expect a more centralized structure in the later period. 16 "a" means the first biannual meeting of that year and b means the second one. 14 15 Automorphically equivalent classes and the blockmodel [Table 2-1 to 2-3] Tables 2-1 to 2-3 demonstrate the automorphically equivalent classes and their blockmodels for the three time periods. Starting with Table 2-1, we can divide the 50 participants into six classes of automorphic equivalence after four splits.17 It first should be noticed that Edgar alone is a class (G5). Referring to Table 1, we know that it is because Edgar is too "central" to be ascribed to any class. He has a degree of 36 which is 7 greater than that of the second highest central person's, Insull. For other central actors identified by the centrality degree measure, most of them are in G4 in Table 2-1. G4 actually has an average StdDegree of 45% which means that on average, 45% of other actors have a tie to this group of people by way of serving in the executive committee in the same year. Including Edgar in G4 leads to a new G4 of eight persons with a new StdDegree of 49%. This inclusion is justified by the reason of the same structural position18 in the image matrix. G4 and G5 are both connected to G1, G2 and each other and don't even have one connection to G3 and G619. A more lucid image matrix appears after combining G4 and G5. Two notable things are found by examining this new matrix. First of all, G4 is the most influential group in the matrix; it is connected to two of the four other groups (G1 and G2).20 Secondly, G5 and G3 are two isolated but self-sustained groups. They connect to less than one other position, yet the actors within these groups are internally completely (G5) or significantly (G3) connected. The four actors in G5 were indeed the only four members in the 1885b executive committee and they never show up after that. Our AEIC records show that three of them were from EEIC. This is the same condition for the nine actors in G3. Seven of them (except Carrol and Smith-H) appear in the executive committee records for 1886 and 1887 and never show up again. The other two appear only in 1890 or 1891 and are missing after that. Among these nine actors, six of them were from EEIC. These facts reflect the sponsor role played by EEIC during the initial years of AEIC. Now turn to Table 2-2. When we compare it to Table 2-1, we can find that except Edgar, none of the seven actors in the most central group--G2--in the earlier period has ever been the member of the star group in the total period. If we add in Table 2-3 for comparison, we can see that these star group actors of the total period are in either G3 or G1, which are the two most central groups in the later period. Except for Insull and Edgar, the rest of 17 For the ways to partition actors in equivalence analysis, see Wasserman and Faust, 1994: 375-385. There is one confusing thing need to be elaborated before we reach this conclusion. Since G5 has only one person, Edgar, there is no way to calculate the submatrix density in the position of G5*G5--we don't count the diagonal value when calculating the density. The UCINET4 thus shows a 0 rather than 1 in that position. If we change the zero to one, the structural position of G4 and G5 are exactly the same. 19 This is indicated by the 0 in the intersection of the G4, G5 with G3 and G6 in the density table. 20 Although G1 is also connected to two other groups, its StdDegree is only 34% which is quite smaller than G4's 49%. The leadership structure shown in the image matrix will be clearer after we split the total period matrix into two sub-matrices. 18 15 16 the eight star actors actually commenced showing up in the scene after 1896.21 when Insull was first elected as the president. This evidence shows that there was a significant transformation in the leadership structure of AEIC around 1896. Considering Table 2-3 together with Table 2-1 and 2-2 gives us a clearer picture about the leadership structure. Table 2-3 shows that G3 has a StdDegree of 98% and G1 has a StdDegree of 70%. Based on the fact that G1's StdDegree is fairly high, G1 should also be treated as one of the influential groups in the later period. The image matrix provides more evidence for the central status of G3 and G1. G3 is linked to every other position and also is completely internally connected.22 No other position has such a central status as G3. While G1 is connected to G3 and G4, it is not significantly linked to G2. This image matrix thus authentically reflects the first central status of G3 and the second standing of G1 in the later period. As mentioned earlier, all the actors in the most central group, G4, of the total period are either in G3 or G1 of the later period. The substantial overlap of the actors between the central groups in the later period and that of the total period suggests that the leadership structure of AEIC during 1885-1910 was actually rooted in the later period. In other words, the influence of these central actors in the total period is largely derived from their central position in the later period. This demonstrates the significant influence of the hub of the Edison/Insull network--Samuel Insull. Presidency and the core group [Table 3 is about here] Combining the information above with the information from Table 3, which lists the presidency of AEIC from 1885 to 1910, enables us to identify the most influential group within this association. We can note that the four actors in G3 of the later period--Dow, Edgar, Insull, and Lieb--are also the members of the most central G4 in the total period. Furthermore, all of them have been the president of the association. Three actors in the secondary central G1 of the later period--Ferguson, McCall, and Murray--are also in the most central G4 of the total period. These three persons also have been the president of AEIC. I thus propose that these seven actors constituted the leadership core of AEIC during 1885-1910 while their leadership was largely derived from their positions in the 1896-1910 period. Two interesting observations about this leadership group are worth mentioning. First, besides Insull himself and Edgar, all of the other five persons--Dow, Ferguson, Lieb, McCall and Murray--became active in the executive committee and the slate of officers after 1896. In other words, their emergence on the platform of AEIC's power circle followed Insull's initial assumption of the presidency. I demonstrate in the last section that all these six actors, including Edgar, were previously connected, either directly or indirectly, to Insull by a working relationship. Insull is the only person that had a previous connection to all of the six core leaders. Secondly, our AEIC records indicate that while 21 Dow and Lieb, each with the third and the fourth highest centrality degree, began participating in the executive committee just in 1896. 22 Notice that the density in the intersection of G3*G3 is 1.00 which means the actors within G3 are completely interconnected. 16 17 these six core actors might not all be members of the central groups in the executive committee of NELA, they still played a significant role in NELA's operation after 1896-following Insull's appearance on the scene of NELA in 1894. Their extensive participation in the positions of president, vice-president, and service as members of the executive committee and other standing committees, shows that this AEIC leadership core "moved" into NELA after they secured their leading position in AEIC. By contrast, there is hardly any actor from NELA playing a significant role in the AEIC executive committee. The six actors who participated first in NELA and then appeared in the AEIC executive committee--Beal, Davis, Huntly, Lesile, Perry, and Weeks--all belong to G2 of Table 2-1, which means that they were not influential in the AEIC executive committee. I show in the next section that most of those executive committee actors of NELA who first participated in AEIC are in central rather than peripheral positions within NELA. This evidence substantiates the argument that, after securing the leading role in a smaller but technically/organizationally pioneering association, Edison/Insull associates moved into a larger association to spread their influence to the entire industry. NELA: 1885-1910 Centrality degree [Table 4 is about here] Table 4 lists every actor's centrality degree. On average, each actor in the earlier period contacts 16 other actors by serving in the executive committee in the same year. Actors in the later period, however, can contact almost 20 other actors. The intensity of comembership is higher in the later period. The network centralization measure, which is 60% in the later period and 45% in the earlier period, reflects the fact that actors in the period of 1898-1910 have more chances to become the star. The third column of Table 4 shows that Scoville has a StdDegree of 100 which means every other actor in the network was linked to him during 1898-1910. Automorphically equivalent classes and the blockmodel [Table 5-1 is about here] Tables 5-1 to 5-3 show the automorphically equivalent groups and their blockmodels in the three periods. The upper half of Table 5-1 divides the 94 actors into six equivalent classes. The classes are equivalent in the sense that the constituents within each class are occupying a similar structural position in the network. One important property of this equivalence is the actors' similar centrality degrees. The second column of Table 5-1 lists the average StdDegree for each equivalent group. It shows that the groups with the highest StdDegree are G5 and G4; each has a StdDegree of 77% and 47%. The image matrix shows that these two groups have the same structural position. They both link to G1 and to each other but not to G2, G3, and G6. If we combine these two groups into a new G4, we will get a 51% StdDegree for the new G4. This StdDegree is much higher than that of the second highest group, G1 (20%). This means that actors in G4 were the most influential ones in the executive committee of NELA during 1885-1910. Moreover, 17 18 Table 4 indicates that these eight actors are actually the top eight actors in the centrality degree dimension. The NELA records indicate that three of the eight actors in the new G4--Davis, Edgar, and Scoville--are from firms using the Edison system; four other of the eight--DeCamp, Huntley, Peck, and Young--are from firms using either Brush or Thomson-Houston systems, which are two major arc lighting systems.23 This shows that both the incandescent system and the arc lighting system had agents in the most influential position in the 1885-1910 period. However, the position pattern is more meaningful and explicable after separating the original network into two networks. [Table 5-2, 5-3 is about here] Comparing the network position of the earlier period (1898-1910) and the later period (1885-1897) with that of the total period (1885-1910) discloses an important transformation of the leadership structure within the NELA executive committee in 1898. In the earlier period, the three agents of Edison--Davis, Edgar and Scoville--who are in the center position in the total period do not exist in the most central position, G5. They do not even exist in the second highest position, G4. As shown in Table 4, these three persons began getting onto the executive committee after 1898. On the other hand, the four members of the most central position in the earlier period are all from either the Brush or the Thomson-Houston system. As mentioned earlier, the leadership in NELA before 1898 largely reflected the arc lighting firm origins and was replaced by the Edisonassociated actors after 1898 when Insull was elected as the president. This point can be demonstrated by looking at Table 5-3. Two of the three most influential actors in the later period--Scoville and Edgar--are from Edison. In addition, the image matrix after combining G4 and G5 into G4 has a proximate pattern of center-periphery structure. This means a core position that is internally cohesive and all other positions have ties to the core but not to each other (Wasserman and Faust, 1994:419-423). G4 of the later period has connections to every other group and is itself completely internally connected. Within this group, two of the three actors are from Edison firms. This transformation argument is even more strongly supported by examining secondarylevel central groups in separate periods. The necessity to scrutinize these groups is obvious when we consider their average StdDegree and the image matrix. G4 in the earlier period with 12 members has an average StdDegree of 42% and G1 in the later period with 12 persons has a 54% average StdDegree. Their significant influence is reflected in the fact that almost half of the other actors have connections to them. As shown in the image matrix, the G4 position in the earlier period and the G1 position in the later period are connected to the other positions to a substantial extent. Thus far, we can identify the background of all twelve persons in G4 and eight of the eleven actors in G1. Of the twelve actors in G4, half (six) of them--Burleigh, Carnes, Fairbank, Gardener, Gilbert, and Young--are from companies deploying the ThomsonHouston system; four others--Gilbert, Redman, Ridlon, and Robertson--are from 23 The last one--Seely--is from a firm using Heisler which is another arc-lamp lighting system. 18 19 companies using the Brush system. The last two--Markle and Nicholls--are from Edison system companies. It is obvious that the persons from T-H and Brush have the overwhelming power in this group. Furthermore, the only two actors from Edison are representing relatively small firms in the camp of the Edison system24 and hence have a limited influence within NELA. On the other hand, six of the eight identified actors in G1 of the later period--Copeland, Davis, Ferguson, Insull, Robinson, and Williams--are from Edison firms; only two, Hunt and Peck, are from Thomson-Houston. Again, this pattern confirms the argument that the influential groups (at the first as well as the secondary level) in the NELA executive committee changed dramatically after 1898. Presidency and the core group [Table 6 is about here] The leadership transformation can also be demonstrated by examining the presidency of NELA. Table 6 shows the thirty one presidencies from 1885 to 1910. In the earlier period (before 1898), except for E. R. Weeks25 and F. Nicholls, all the other identified presidents are from Brush, Thomson-Houston, or Fort Wayne system firms. On the other hand, eight of the ten presidents identified in the later period are from Edison firms. Considering the level of influence within the executive committee together with the presidency of NELA, we can locate eight core actors who are most important to the operation of the association. Scoville, DeCamp, and Edgar are three persons in the first level central position in the executive committee. Edgar was also the president in 1903 and 1904. Davis, Farrand, Insull, Ferguson, and Williams are in the secondary central position in the executive committee and all of them were president during the 1898-1910 period. The NELA records show that six of these eight core actors are from Edison firms. In the following section, I trace these people's pre-existing relationships with Insull and demonstrate the significant effect of Insull and his social networks in the operation of NELA. The trade association records also correspond to my argument that the leadership core of AEIC "moved" into NELA after they established their dominant status in AEIC. Those participants in the executive committee of NELA who first emerged at AEIC, such as Copeland, Edgar, Ferguson, Insull, and Scoville, all occupy an influential position within the NELA executive committee. Scoville and Edgar are the most and the third central actors in the later period and the other three are all in the secondary central group, G1. 24 Markle is from EEIC in Hazleton, Pa., which had only a capacity of 2,700 lamps around 1890, and Nicholls is from Toronto Incandescent Light and Power Co., which had a 6,000 lamps capacity. Both are very small compared to the major firms in Edison system such as Chicago Edison which had 40,000 lamps and Boston Edison which had 29,000 lamps. 25 Weeks is a complex figure. According to the NELA proceedings, he represented Thomson-Houston Electric Light Company in Kansas City, Missouri from 1885 till 1887 and served as the vice president in the NELA. After 1888, he began representing Edison Electric Light and Power Co. in Kansas. We do not have enough data to explain this transition but it seems that Weeks was originally involved with ThomsonHouston system. 19 20 Networks within AEIC and NELA Having identified those Edison-associated core actors in AEIC and NELA, I delineate their pre-existing relationship with Insull in this section . These relationships were mainly working relationships which were already established before these actors' emergence in the associations' power circles. I then address the network mechanisms embedded in this historical configuration which enabled the pre-existing relationships to be mobilized and to successfully dominate AEIC and NELA. [Table 7 is about here] These pre-existing relationships were not established intentionally by Insull but resulted from the unpremeditated career overlap between Insull and these core actors. Table 7 lists the major career developments for some of the core leaders. Comparing these career developments with that of Insull's provides the following findings. First, Edgar and Lieb both joined Edison Machine Works around 1882 and 1883 when Insull was the private secretary of Thomas Edison. Insull then was representing Edison in the establishment of different Edison manufacturing firms including the Edison Machine Works in 1881. This was a new firm with newly-graduated employees. Edgar and Lieb had just graduated from colleges and the positions they held in Edison Machine Works were their first major career steps. Insull was about the same age as Edgar and Lieb and had just made his chief career move by becoming Edison's secretary. After their initial career overlap in Edison Machine Works, Insull and Edgar had more common experience by both serving in EELC during 1884-1886. After that, Edgar was sent to EEIC-Boston by the EEIC parent company to help them set up the central station and in 1900 he became the president of EEIC-Boston. Lieb was sent to Europe by Thomas Edison to help Italian Edison install central stations. He then came back to America in 1894 and became one of the major figures in EEIC-New York (later New York Edison ). Their similar age and shared career experience facilitated the development of their relationship before they showed up in the associations, and their important positions in the leading Edison firms26 in their later career were undoubtedly helpful for their collective influence within the associations. As opposed to the cohort relationship between Edgar, Lieb and Insull, the relationship between Ferguson and Insull was a patron-client case. Ferguson was younger than Insull and joined Chicago Edison immediately after he graduated from MIT. When Insull joined Chicago Edison as the president in 1892, Ferguson was an electrical engineer. Yet after just one year, Ferguson was promoted to a supervising position in charge of all soliciting and contracting. In the following year, he began showing up in AEIC standing committees. In 1897 he became general superintendent of Chicago Edison and commenced his influence in NELA. For McCall and Murray, there seems to be no direct career overlap with Insull. Yet they did closely connect to someone who had direct links to Insull. For McCall, the intermediary between him and Insull was John Vail. Vail had worked with Insull in the Edison Machine Works. Although Vail was not a core actor within the associations, he 26 Edgar in EEIC-Boston, Lieb in New York Edison, and Insull in Chicago Edison. 20 21 participated in AEIC from 1886 till 1898 as the secretary and an member in executive committee and different standing committees. Vail was the chief engineer of Pennsylvania Electric Co. from 1890 through 1907. During this period, McCall was the secretary in 1893 and then the president in 1902 of the same company, and began representing his company in AEIC in 1903. Vail had co-working experience with Insull in his early career and later worked with McCall for over ten years. I claim that he was the link between Insull and the core leader of AEIC--McCall. As for Murray, Table 7 shows that he moved to New York City in 1895 and became second vice-president and general manager of New York Edison in 1900. It should be noticed that Lieb returned from Italy to New York Edison in 1894 and served as the third vice-president and general manager. He certainly had a career overlap with both Murray and Insull; he was the bridge between these two actors. In addition, there was another person related to Insull through Lieb: Williams. The relationship between Williams and Lieb was the same as that between Ferguson and Insull. Lieb was Williams's patron. Williams joined EEIC-New York in 1885 and was the general agent when Lieb was the third vice-president and general manager. "Williams and Lieb were close enough that by 1898, Lieb sent him to Europe to examine turbines as Lieb's proxy on a trip"27. Lieb seemed to treat Williams as his representative and even sent Williams to Europe to continue his work. When Williams returned to EEIC-New York in 1903, we don't know which position he was occupying; what is certain is that he began showing up on the NELA scene and became the general commercial manager of New York Edison in 1915. Until now, I have discussed the relationships between Insull and the core actors listed in Table 7. Now the focus turns to those core actors that do not have data in any biographical encyclopedia or dictionary. For AEIC, the only remaining core actor is Dow. Dow was acquainted with Insull by working with him in Chicago from 1888 to 1893: "Dow was involved in wiring the South Park district for Chicago Brush. His biography notes that he met and interacted with Insull from 1888 to 1893"28. There also remain two actors in NELA that we have not yet discussed--Scoville and Davis. Although there is no biographical data for Davis29, Scoville was from Cleveland Edison and his connection to Insull was mediated by Robert Lindsay: Lindsay was a boy living near Menlo Park and visited Edison and his associates frequently--meeting people including John Lieb. He afterwards worked at the Edison Lamp Company, and then went to Brooklyn Edison as Assistant General Manger in 1889 as it opened. Insull, Lieb, Johnson, etc. had chosen him and worked closely with him as they created a new 'prototype' plant. He went to Cleveland Edison in 1893.30 27 Excerpts from communication with Patrick McGuire. ibid. 29 I can't find any biographical data for Davis. He is the only person for whom I can't make an argument about his relationship with Insull. 30 Excerpts from communication with Patrick McGuire. 28 21 22 Lindsay was the link between Insull and Scoville. After he went to Cleveland Edison in 1893, we see that Scoville came into view in NELA after 1898. The preceding evidence demonstrates the irreplaceable position of Insull within the Edison/Insull associated network. This network was based on previous co-working relationships and was mobilized within the trade associations after the hub of the network, Insull, occupied the presidency. Yet there were other mechanisms embedded in this specific historical configuration that made this network function in the trade associations. First, the actors in this network shared a common technical and organizational "ideology" concerning the electricity enterprise which constituted the solidarity foundation for the network. This ideology originated from working together under the leadership of the charismatic inventor, Thomas Edison. This is especially true for those actors who had worked in the Edison Machine Works, such as Insull, Edgar, and Lieb and the two intermediaries--Lindsay and Vail. By way of these actors, this ideology then was shared by Dow, Ferguson, Murray, Williams, Scoville, and McCall. Secondly, the core actors within AEIC and NELA not only had a common vision for the electricity business but also shared common interests. Most of these actors were in highranking managerial positions in the large urban Edison electric companies.31 All these companies had the largest capacity for generating and lighting in the Edison camp. In other words, these firms had an enormous investment in the Edison system; and these Edison/Insull associated actors mentioned above were in charge of running these firms. This common interest was undoubtedly one of the important mechanisms for the solidarity and corporate actions of the Edison/Insull network. Thirdly, the network solidarity and corporate actions were even stronger when there were competitors. In the emerging period of the electricity industry, there were different systems competing for dominant status in the market. Each of them had different generating, transmitting, and distributing apparatus with different types of lighting devices. As pointed out in the history section, the two broadest categorizations were the incandescent and arc lamp systems. Yet within these two categories, there were companies that developed different electric systems such as Brush, Thomson-Houston, Heisler, Fort Wayne, Western, or Arnoux-Hochhausen for the arc-lamp system and Edison, Westinghouse, Bernstein, Schuyler, or National for the incandescent lighting system. Under such a flourishing environment, competition was always an impulse to mobilize the pre-existing network for corporate action in the trade associations. Fourthly, the corporate actions of the Edison/Insull network were able to be activated because this network had a powerful leader--Insull. All the influence of this network emerged after Insull's assumption of presidency of the trade associations. This is especially obvious for NELA. Even in a trade association which was largely originated by arc-lighting firms, Insull's influence was still significant. He brought in other actors of his network and put them in influential positions. His strength came from his early contacts with other leaders in NELA. As early as 1890, Insull was already a member in the board 31 Insull and Ferguson in Chicago Edison, Dow in Detroit Edison, Edgar in Boston Edison, Lieb, Murray, and Williams in New York Edison, Scoville in Cleveland Edison, and McCall in Philadelphia Electric. All of these firms were using the Edison centralized generating system and incandescent lighting. 22 23 of managers of New York Electric Club32 which is identified by Nye (1990) as a group of elites who dominated NELA in the initial era. Conclusion By using several network methods, this paper identifies a set of influential actors within AEIC and NELA during 1885-1910, and demonstrates the pre-existing social networks among these core actors by using relevant biographical data. Furthermore, the separation of the total period matrix into two sub-matrices shows the significant status of the hub of this network--Samuel Insull. This empirical evidence strongly supports the idea that there was a set of pre-connected actors who, under the leadership of Insull, materialized their domination of the electricity industry through AEIC and NELA. Thus, they were capable of using these two associations as a vehicle to disseminate their preferred model of electricity enterprise, the centralized/incandescent electricity system. My emphasis on the role of human agents and their social relationship on industry development challenges the market-centered theories which sever human agents from their historical and social contexts. In contrast to the clean models advocated by these neoclassical theorists, this paper calls for a more socially embedded approach for the studies of technical choice and organizational development. Small historical events and market efficiency are convenient conceptual tools for constructing succinct explanations yet they simultaneously risk losing social reality in history. Industry development, like the evolution of other economic institutions, is embedded in social structure (Granovetter, 1992). It is therefore necessary to use a socially-embedded approach to arrive at a more complete account of that development. Secondly, advocating human agents and their social environment does not necessarily lead to the "great man" type of conclusion. Indeed, the four historical contingencies, which are indispensable for the Edison/Insull networks to function, proposed in the last section suggest that we should emphasize the strength of human agency in the context of their historical/structural condition. Finally, by showing the social structure within trade associations, this paper also challenges the increasing prevalent theory of economic governance. Although this theory provides several useful concepts for studies of governance structure in capitalist economies, this paper argues that it overlooks the role of networks in the governance process. The evidence exhibited above suggests the need to reconsider the relationship among the five governance mechanisms of the theory. 32 American Electrical Directory, 1890:15 23 24 References Arthur, W. Brian 1984 "Competing Technologies and Economic Prediction." Options (April) I.I.A.S.A. Laxenburg, Austria. 1989 "Competing Technologies, increasing Returns, and lock-in by historical events." The Economic Journal 99:116-131. 1994a "Positive feed backs in the economy." Chapter 1 in Increasing Returns and Path Dependence in the Economy. Ann Arbor: The University of Michigan Press. Pp.1-12. 1994b "Competing Technologies, increasing Returns, and lock-in by historical small events." Chapter 2 in Increasing Returns and Path Dependence in the Economy. Ann Arbor: The University of Michigan Press. Pp.13-32. Borgatti, S.P., M.G. Everett, and L.C. Freeman 1992 UCINET IV Version 1.07. Columbia, SC: Analytic Technologies. Borgatti, S.P. and M.G. Everett 1992 "The notion of position in social network analysis." in Marsden, P. (ed.), Sociological Methodology, 1992. London: Basil Blackwell. Brass, Daniel J. 1984 "Being in the right place : a structural analysis of individual influence in an organization." Administrative Science Quarterly 29(4):518-539. Brass, Daniel J. 1992 "Power in organizations: a social network perspective." Research in Politics and Society 4:295-323. Breiger, Ronald L. 1988 "The duality of persons and groups." in Wellman, Barry and S.D. Berkowitz, ed., Social Structure: A Network Approach. New York: Cambridge University Press. Pp.83-92. Brown, Prentiss Marsh 1951 Alex Dow, 1862-1942, for 28 years the president of "Detroit Edison." New York: Newcomen Society in North America. Campbell, John L. and Leon N. Lindberg 1991 "The evolution of governance regimes." in Campbell, John, J. Rogers Hollingsworth, and Leon N. Lindberg, ed., Governance of the American Economy. Cambridge, New York: Cambridge University Press. Pp.319-355. Campbell, John L., J. Rogers Hollingsworth, and Leon N. Lindberg 1991 Governance of the American Economy. Cambridge, New York: Cambridge University Press. Chandler, Alfred 1977 The Visible Hand: The Manageral Revolution in American Business. Cambridge: Harvard University Press. David, Paul 1985 "Clio and the economies of QWERTY." American Economic Review Proceedings 75:332-337. 24 25 Dalton, Melville 1959 Men who manage: Fusions of feeling and theory in administration. New York: John Wiley & Sons. Doreian, Patrick 1980 "On the evolution of group and network structure." Social Networks 2:235252. 1986 "On the evolution of group and network structure II." Social Networks 8:3364. Everett, M.G. 1885 "Role similarity and complexity in social networks." Social Networks 7:353359. Everett, M.G. and S.P. Borgatti 1988 "Calculating role similarities: An algorithm that helps determine the orbits of a graph." Social Networks 10:77-91. Freeman, L.C. 1979 "Centrality in social networks: I. Conceptual clarification." Social Networks 1:215-239 Granovetter, Mark 1985 "Economic action and social structure: A theory of embeddedness." American Journal of Sociology 91(3):481-510. 1992 "Economic institutions as social constructions: A framework for analysis." Acta Sociologica 35:3-11. Granovetter, Mark and Richard Swedberg (ed.) 1992 The sociology of economic life. Boulder, Colorado: Westview Press. Hickson, David J.; Hinigs, C. R.; Lee, C. A.; Schneck, R. E.; Pennings, J. M. 1971 "A strategic contingencies' theory of intra-organizational power." Administrative Science Quarterly 16(2):216-229. Hinings, C. R.; Hickson, D. J.; Pennings, J. M.; Schneck, R. E. 1974 "Structural conditions of intraorganizational power." Administrative Science Quarterly 19(1):22-44. Hirsh, P. , Stuart Michaels, and Ray Friedman 1987 "Dirty hands versus clean models: Is sociology in danger of been seduced by economics." Theory and Society 16:317-336. Hollingsworth, J. Rogers and Leon N. Lindberg 1985 "The governance of the American economy: the role of markets, clans, hierarchies, and associative behavior." in Streeck, Wolfgang and Philippe C. Schmitter, ed., Private Interest Government: Beyond Market and State. Beverly Hills, California: Sage. Pp.221-254. Hollingsworth, J. Rogers and Robert Boyer 1995 "Coordination of economic actors and social systems of production." in Boyer, Robert and Rogers J. Hollingsworth, ed., Contemporary Capitalism: The Embeddedness of Institutions. (forthcoming) Hollingsworth, Rogers, Philippe C. Schmitter and Wolfgang Streeck (ed.) 1994 Governing Capitalist Economies. New York: Oxford University Press. 25 26 Hughes, Thomas 1983 Networks of Power: Electrification of America 1880-1930. Baltimore: John Hopkins University Press. Insull, Samuel 1924 Public Utilities and Modern Life; Selected Speeches 1914-1923, Ed.William Kelley, Chicago: Privately Published. Krackhardt, David 1992 "The strength of strong ties: The importance of Philos in organizations." in Nohria, Nitin and Robert G. Eccles, ed., Networks and Organizations: Structure, Form, and Action. Boston: Harvard Business School Press. Pp.216-239. 1993 "Informal networks: The company behind the chart." Harvard Business Review (July 1993): 105-111. Lindberd, Leon, John L. Campbell and J. Rogers Hollingsworth 1991 "Economic governance and the analysis of structural change in the American economy." in Campbell, John, J. Rogers Hollingsworth, and Leon N. Lindberg, ed., Governance of the American Economy. Cambridge, New York: Cambridge University Press. Pp.3-34. Macaulay, Stewart 1963 "Non-contractual relations in business: A preliminary study." American Sociological Review 28:55-67. McGuire, Patrick, Mark Granovetter, and Michael Schwartz 1992 Book Prospectus for The Social Construction of Industry: Human Agency in the Development, Diffusion, and Institutionalization of the Electric Utility Industry. McGuire, Patrick, Mark Granovetter, and Michael Schwartz 1993 "Thomas Edison and the social construction of the early electricity industry in America." in Swedberg, Richard ed., Explorations in Economic Sociology. New York: Russell Sage Foundation. Pp.213-246. McGuire, Patrick, Mark Granovetter, and Michael Schwartz (forthcoming) The Social Construction of Industry: Human Agency in the Development, Diffusion, and Institutionalization of the Electric Utility Industry. McMahon, A. Michael 1985 Reflections; A Centennial Essay on the Association of Edison Illuminating Companies. New York: Association of Edison Illuminating Companies. National Industrial Conference Board 1925 Trade Associations: Their Economic Significance and Legal Status. New York: National Industrial Conference Board. Nye, David E. 1990 Electrifying America: Social Meanings of a New Technology, 1880-1940. Cambridge, MA: The MIT Press. O'Brien, Patricia 1994 "Governance systems in steel: the American and Japanese experience." in Hollingsworth, Rogers, Philippe C. Schmitter and Wolfgang Streeck, ed., Governing Capitalist Economies. New York: Oxford University Press. Pp.43-71. 26 27 Passer, Harold 1953 The Electrical Manufacturers, 1875-1900: A Study of Competition, Entrepreneurship, Technical Change, and Economic Growth. Cambridge, MA: Harvard University Press. Pettigrew, Andrew M. 1972 "Information control as a power resource." Sociology 6(2):187-204. Pfeffer, Jeffrey 1981 Power in Organizations. Cambridge, Mass. : Ballinger Publishing Company. Streeck, Wolfgang and Philippe C. Schmitter (ed.) 1985 Private Interest Government: Beyond Market and State. Beverly Hills, California: Sage. Temporary National Economic Committee 1941 Investigation of Concentration of Economic Power: Trade Association Survey (Monograph No. 18). Washington, D.C.: Government Printing Office. Traxler, Franz and Brigitte Unger 1994 "Industry or infrastructure? A cross-national comparison of governance: Its determinants and economic consequences in the dairy sector." in Hollingsworth, Rogers, Philippe C. Schmitter and Wolfgang Streeck, ed., Governing Capitalist Economies. New York: Oxford University Press. Pp.183-214 U.S. Dept. Of Agriculture. 1916 Electric Power Development In U.S., 64th Congress, 1st session, Document # 316, Senate, V- 8, 9, 10. Washington: Government Printing Office. U.S. Dept. of Commerce and Labor, Bureau of the Census 1905 Census of The Electric Utility Industry-1902. Washington: Government Printing Office. U.S. Dept. of Commerce and Labor, Bureau of the Census 1910 Census of The Electric Utility Industry-1907. Washington: Government Printing Office. U.S. Dept. of Commerce, Bureau of the Census 1915 Census of The Electric Utility Industry-1912. Washington: Government Printing Office. U.S. Dept. of Commerce, Bureau of the Census 1920 Census of The Electric Utility Industry-1917. Washington: Government Printing Office. U.S. Department of Commerce, (prepared by Warford, L.E. and Richard A. May) 1923 Trade Association Activities. Washington: Government Printing Office. U.S. Dept. of Commerce, Bureau of the Census 1925 Census of The Electric Utility Industry-1922. Washington: Government Printing Office. United States Federal Trade Commission. 1927 Electric Power Industry; Control of Power Companies, FTC Re-Sen. 329, 69th Congress. Washington, D.C.: Government Printing Office. Serial Set 8703, S. Doc.213. 27 28 United States Federal Trade Commission. 1928 Electric Power Industry; Supply of Electrical Equipment and Competitive Conditions, FTC, Re-Sen, Res.329, 70th Congress. Washington, D.C.: Government Printing Office. S.Doc.46. United States Federal Trade Commission. 1934 Efforts By Associations and Agencies Of Electric And Gas Utilities To Influence Public Opinion; Investigations Of Utility Companies, FTC Summary Report to Senate, Re-Res. 83, to the 1st session, 70th Congress. Washington, D.C.: Government Printing Office. S.Doc.92. United States Federal Trade Commission. 1935 Investigations Of Utility Companies--Laws and Regulation, part 73 A, 70th Congress, 1st sess., V-12. Washington, D.C.: Government Printing Office. Wasserman, Stanley and Katherine Faust 1994 Social Network Analysis: Methods and Applications. Cambridge, MA: Cambridge University Press. Wasserman, Stanley and Dawn Iacobucci 1988 "Sequential Social Network Data." Psychometrika 53 (2):261-282. Williamson, O.E. 1975 Market and Hierarchy. New York: Free Press. 1985 The Economics of Institutions in Capitalism . New York: Free Press. White, H.C., Boorman, S.A., and Breiger, R.L. 1976 "Social structure from multiple networks. I. Blockmodels of roles and positions." American Journal of Sociology 81:730-779. 28 29 Table 1. Freeman's centrality degree for AEIC participants in executive committees 1885-1910, 1885-1895, 1896-1910 1885-1910 Number 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 Name Edgar Insull Lieb Dow Ferguson Stetson Murray Barstow McCall Gilbert Vail Field-A Howell Smith-A Johnson Beggs Eglin Huntingt Leslie Weeks Bowker Brine Freeman Merritt Perry Chandler Davis Huntley O'Dea Shaw Wilcox Marks Carroll Hammer Lindenbe McLaugl Scovil Beal Dwelly Field-C Gorton Humbird Jones Pryor Smith-H Upton Hastings Schwenck Stewart Wood Mean Std Dev Net Cent Degree 36 29 26 24 21 21 19 18 18 17 17 14 14 14 13 11 11 11 11 11 9 9 9 9 9 8 8 8 8 8 8 6 5 5 5 5 5 4 4 4 4 4 4 4 4 4 3 3 3 3 10.56 7.45 54.08% 1885-1895 NrmDegree 73 59 53 49 43 43 39 37 37 35 35 29 29 29 27 22 22 22 22 22 18 18 18 18 18 16 16 16 16 16 16 12 10 10 10 10 10 8 8 8 8 8 8 8 8 8 6 6 6 6 Name Smith-A Edgar Beggs Weeks Merritt Shaw Vail Marks Carroll Hammer Lindenbe McLaugl Stetson Beal Dwelly Field-C Gorton Humbird Insull Jones Pryor Smith-H Upton Hastings Schwenck Stewart Wood Degree 14 12 11 11 9 8 8 6 5 5 5 5 5 4 4 4 4 4 4 4 4 4 4 3 3 3 3 5.78 3.02 34.15% 29 1896-1910 NrmDegree 54 46 42 42 35 31 31 23 19 19 19 19 19 15 15 15 15 15 15 15 15 15 15 12 12 12 12 Name Edgar Insull Lieb Dow Ferguson Murray Barstow McCall Gilbert Stetson Field-A Howell Johnson Eglin Huntingt Leslie Bowker Brine Freeman Perry Vail Chandler Davis Huntley O'Dea Wilcox Scovil Degree 26 26 26 24 21 19 18 18 17 17 14 14 13 11 11 11 9 9 9 9 9 8 8 8 8 8 5 13.93 6.29 52.15% NrmDegree 100 100 100 92 81 73 69 69 65 65 54 54 50 42 42 42 35 35 35 35 35 31 31 31 31 31 19 30 Table 2-1. Automorphically equivalent classes and the blockmodel for AEIC executive committee 1885-1910 Average NrmDegree Names Number (50) G1 G2 34% 16% Barstow, Field-A, Howell, Smith-A, Stetson, Vail Beal, Beggs, Bowker, Brine, Chandler, Davis, Eglin, Field-C, Freeman, Huntingt, Huntley, Johnson, Jones, Leslie, Marks, Merritt, O'Dea, Perry, Pryor, Scovil, Upton, Weeks, Wilcox 6 23 G3 G4 G5 G6 10% 45% 73% 6% Carroll, Dwelly, Gorton, Hammer, Humbird, Lindenbe, McLaugl, Shaw, Smith-H Dow, Ferguson, Gilbert, Insull, Lieb, McCall, Murray Edgar Hastings, Schwenck, Stewart, Wood 9 7 1 4 G1 G2 G3 G4 G5 G6 Density Table (grand density=0.22) 1G G2 G3 G4 G5 0.73 0.21 0.24 0.67 1.00 0.21 0.10 0.02 0.48 1.00 0.24 0.02 0.36 0.00 0.00 0.67 0.48 0.00 1.00 1.00 1.00 1.00 0.00 1.00 0.00 0.00 0.00 0.00 0.00 0.00 G6 0.00 0.00 0.00 0.00 0.00 1.00 G1 G2 G3 G4 G5 G6 1G 1 0 1 1 1 0 Image Matrix G2 G3 G4 0 1 1 0 0 1 0 1 0 1 0 1 1 0 1 0 0 0 G5 1 1 0 1 1 0 Image Matrix (combined G4 and G5 as G4) 1G G2 G3 G4 G5 G1 1 0 1 1 0 G2 0 0 0 1 0 G3 1 0 1 0 0 G4 1 1 0 1 0 G5 0 0 0 0 1 30 G6 0 0 0 0 0 1 31 Table 2-2. Automorphically equivalent classes and the blockmodel for AEIC executive committee 1885-1895 G1 G2 G3 G4 G5 Average Names NrmDegree 17% Beal, Insull, Marks, Pryor, Stetson 40% Beggs, Edgar, Merritt, Shaw, Smith-A, Vail, Weeks 17% Carroll, Field-C, Hammer, Jones, Lindenbe, McLaugl, Smith-H, Upton 15% Dwelly, Gorton, Humbird 12% Hastings, Schwenck, Stewart, Wood Density Table (grand density=0.22) 1G G2 G3 G4 G1 0.43 0.43 0.00 0.00 G2 0.43 0.62 0.46 0.29 G3 0.00 0.46 0.18 0.00 G4 0.00 0.29 0.00 1.00 G5 0.00 0.00 0.00 0.00 Number (27) 5 7 8 3 4 G5 0.00 0.00 0.00 0.00 1.00 G1 1 1 0 0 0 G1 G2 G3 G4 G5 Image Matrix G2 G3 G4 1 0 0 1 1 1 1 0 0 1 0 1 0 0 0 Table 2-3. Automorphically equivalent classes and the blockmodel for AEIC executive committee 1896-1910 Average NrmDegree G1 G2 G3 G4 70% 32% 98% 47% Names Number (27) Barstow, Ferguson, Gilbert, McCall, Murray, Stetson Bowker, Brine, Chandler, Davis, Freeman, Huntley, O'Dea, Perry, Scovil, Vail, Wilcox Dow, Edgar, Insull, Lieb Eglin, Field-A, Howell, Huntingt, Johnson, Leslie Density Table (grand density=0.54) 1G G2 G3 G4 G1 1.00 0.44 1.00 0.75 G2 0.44 0.09 0.95 0.14 G3 1.00 0.95 1.00 1.00 G4 0.75 0.14 1.00 0.47 G1 G2 G3 G4 31 G1 1 0 1 1 Image Matrix G2 G3 0 1 0 1 1 1 0 1 6 11 4 6 G4 1 0 1 0 G5 0 0 0 0 1 32 Table 3. Presidency in AEIC 1885~1910 Year 1885a 1885b 1886a 1886b 1887a 1887b 1888a 1888b 1889a 1889b 1890 1891 1892 1893 1894 1895 1896 1897 1898 1899 1900 1901 1902 1903 1904 1905 1906 1907 1908 1909 1910 Name Humbird, James S. Humbird, James S. Beggs, John I. Beggs, John I. Beggs, John I. Beggs, John I. Beggs, John I. Beggs, John I. Beggs, John I. Beggs, John I. Beggs, John I. Beggs, John I. Beggs, John I. Edgar, C. L. Edgar, C. L. Edgar, C. L. Insull, Samuel Insull, Samuel Bowker, R. R. Lieb, J. W. Jr. Lieb, J. W. Jr. Ferguson, L. A. Ferguson, L. A. McCall, Joseph B. McCall, Joseph B. McCall, Joseph B. Dow, Alexander Dow, Alexander Freeman, W.W. Murray, Thomas E. Murray, Thomas E. Firm EEIC EEIC EEIC-New York EEIC-New York EEIC-New York EEIC-New York EEIC-New York EEIC-New York EEIC-New York EEIC-New York EEIC-New York Harrisburg Electric Light Co. Harrisburg Electric Light Co. EEIC-Boston EEIC-Boston EEIC-Boston Chicago Edison Co. Chicago Edison Co. EEIC-New York EEIC-New York EEIC-New York Chicago Edison Co. Chicago Edison Co. Edison Electric Light Co. Edison Electric Light Co. Edison Electric Light Co. Edison Illuminating Co. Edison Illuminating Co. EEIC-Brooklyn New York Edison Co. New York Edison Co. 32 Committee(Abb) cfi ex ex ex ex, csb ex, csb ex ex(chair) ex(chair) ex(chair), cil(chair), cm ex(chair), cil(chair) ex(chair), cm, css(chair), csb ex(chair), csb ex(chair), cse ex(chair), cse ex(chair) ex(chair) ex(chair) cil ex(chair) ex(chair) 33 Table 4. Freeman's centrality degree for NELA participants in the executive committees 1885-1910, 1885-1897, 1898-1910 1885-1910 1885-1897 1898-1910 Numbe 1r 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 Name DeCamp Huntley Peck Scovil Seely Edgar Young Davis Gilbert Farrand Nicholls Gardener Redman Burleigh Faben Fergu-LA Bean Carnes Howell Markle Robinson Walbank Williams Atkinson Copeland Doherty Fairbank Hunt Insull Ridlon Robertso Stevens Bemiss Bottomle Brock Scott Wagner Francisc Gossler Hartman Hewitt Law Perkins Blaxter Lynch Moses Smith-HJ White Wilmerdi Bosley Harries Morris-J Sunny Dow Corrivea Morris-W Searle Alexande Bowen Corby Degree 72 53 53 46 43 37 37 34 31 29 29 27 27 26 26 26 25 25 25 25 25 25 25 24 24 24 24 24 24 24 22 22 21 21 21 21 20 19 19 19 19 19 19 18 18 18 18 17 17 16 16 16 16 15 14 14 14 13 13 13 NrmDegree 77 57 57 49 46 40 40 37 33 31 31 29 29 28 28 28 27 27 27 27 27 27 27 26 26 26 26 26 26 26 24 24 23 23 23 23 22 20 20 20 20 20 20 19 19 19 19 18 18 17 17 17 17 16 15 15 15 14 14 14 Name Huntley DeCamp Peck Seely Young Nicholls Burleigh Faben Carnes Markle Fairbank Ridlon Gardener Redman Gilbert Robertso Francisc Law Blaxter Lynch Moses Smith-HJ Wilmerdi Bean Bosley Morris-J Stevens Sunny Wagner Walbank Corrivea Morris-W Alexande Bowen Corby Armstron Rollins Abell Davis Mackie Mason Smith-TC Weeks Ayer English Thurber Barton Beebe Hart Kreidler Leonard Leslie Rhodes Fletch-G Holbrook Noonan Donaldso Fletch-J Hockhaus O'Connor Degree 42 41 40 37 31 29 26 26 25 25 24 24 23 23 22 22 19 19 18 18 18 18 17 16 16 16 16 16 16 16 14 14 13 13 13 12 12 11 11 11 11 11 11 10 9 9 8 8 8 8 8 7 7 6 6 6 5 5 5 5 33 NrmDegree 71 69 68 63 53 49 44 44 42 42 41 41 39 39 37 37 32 32 31 31 31 31 29 27 27 27 27 27 27 27 24 24 22 22 22 20 20 19 19 19 19 19 19 17 15 15 14 14 14 14 14 12 12 10 10 10 8 8 8 8 Name Scovil DeCamp Edgar Farrand Fergu-LA Howell Robinson Williams Atkinson Copeland Davis Doherty Hunt Insull Peck Bemiss Bottomle Brock Scott Bean Gilbert Gossler Hartman Hewitt Perkins Walbank White Harries Seely Stevens Young Dow Gardener Redman Searle Wagner Dunham Frueauff Huntley Tait Byllesby Campbell Smith-EL Stone Whitaker Martin-J Martin-T Degree 46 42 37 29 26 25 25 25 24 24 24 24 24 24 24 21 21 21 21 19 19 19 19 19 19 19 17 16 16 16 16 15 14 14 14 14 13 12 12 12 11 11 11 11 11 10 8 NrmDegree 100 91 80 63 57 54 54 54 52 52 52 52 52 52 52 46 46 46 46 41 41 41 41 41 41 41 37 35 35 35 35 33 30 30 30 30 28 26 26 26 24 24 24 24 24 22 17 34 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 Dunham Armstron Frueauff Rollins Tait Abell Byllesby Campbell Mackie Mason Smith-EL Smith-TC Stone Weeks Whitaker Ayer Martin-J English Thurber Barton Beebe Hart Kreidler Leonard Martin-T Leslie Rhodes Fletch-G Holbrook Noonan Donaldso Fletch-J Hockhaus O'Connor Mean Std Dev Net Cent 13 12 12 12 12 11 11 11 11 11 11 11 11 11 11 10 10 9 9 8 8 8 8 8 8 7 7 6 6 6 5 5 5 5 18.89 11.38 58.35 % 14 13 13 13 13 12 12 12 12 12 12 12 12 12 12 11 11 10 10 9 9 9 9 9 9 8 8 6 6 6 5 5 5 5 16.27 9.15 45.12 % 34 19.45 7.83 60.29% 35 Table 5-1. Automorphically equivalent classes and the blockmodel for NELA executive committee 1885-1910 G2 G3 G4 G5 G6 Average Names NrmDegree 20% Abell, Armstron, Atkinson, Ayer, Bean, Bemiss, Blaxter, Bosley, Bottomle, Bowen, Brock, Burleigh, Byllesby, Campbell, Carnes, Copeland, Corby, Corrivea, Doherty, Dow, Dunham, Faben, Fairbank, Farrand, Fergu-LA, Fletch-G, Francisc, Frueauff, Gardener, Gilbert, Gossler, Harries, Hartman, Hewitt, Howell, Hunt, Insull, Law, Leslie, Lynch, Mackie, Markle, Martin-J, Martin-T, Mason, Morris-J, Morris-W, Moses, Nicholls, Perkins, Redman, Ridlon, Robertso, Robinson, Rollins, Scott, Searle, Smith-EL, Smith-HJ, Smith-TC, Stevens, Stone, Sunny, Tait, Wagner, Walbank, Weeks, Whitaker, White, Williams, Wilmerdi 10% Alexande, Barton, English, Kreidler, Rhodes, Thurber 8% Beebe, Hart, Holbrook, Leonard, Noonan 47% Davis, Edgar, Huntley, Peck, Scovil, Seely, Young 77% DeCamp 5% Donaldso, Fletch-J, Hockhaus, O'Connor G1 G2 G3 G4 G5 G6 Density Table (grand density=0.20) G1 G2 G3 G4 G5 0.18 0.09 0.07 0.50 0.92 0.09 0.20 0.10 0.19 0.00 0.07 0.10 0.40 0.00 0.00 0.50 0.19 0.00 0.90 1.00 0.92 0.00 0.00 1.00 0.00 0.03 0.00 0.00 0.00 0.00 G1 G6 0.03 0.00 0.00 0.00 0.00 1.00 G1 G2 G3 G4 G5 G6 G1 0 0 0 1 1 0 Image Matrix G2 G3 G4 0 0 1 1 0 0 0 1 0 0 0 1 0 0 1 0 0 0 Number (94) 71 G5 1 0 0 1 1 0 Image Matrix (combined G4 and G5 as G4) G1 G2 G3 G4 G5 G1 0 0 0 1 0 G2 0 1 0 0 0 G3 0 0 1 0 0 G4 1 0 0 1 0 G5 0 0 0 0 1 35 6 5 7 1 4 G6 0 0 0 0 0 1 36 Table 5-2. Automorphically equivalent classes and the blockmodel for NELA executive committee 1885-1897 G5 G6 Average Names NrmDegree 24% Abell, Armstron, Ayer, Bean, Blaxter, Bosley, Corrivea, Davis, English, Francisc, Law, Mackie, Mason, Morris-W, Rollins, Smith-HJ, Stevens, Thurber, Wagner, Walbank, Weeks, Wilmerdi 21% Alexande, Barton, Bowen, Corby, Fletch-G, Kreidler, Lynch, Morris-J, Moses, Rhodes, Smith-TC, Sunny 12% Beebe, Hart, Holbrook, Leonard, Leslie, Noonan 42% Burleigh, Carnes, Faben, Fairbank, Gardener, Gilbert, Markle, Nicholls, Redman, Ridlon, Robertso, Young 68% DeCamp, Huntley, Peck, Seely 8% Donaldso, Fletch-J, Hockhaus, O'Connor G1 G2 G3 G4 G5 G6 Density Table (grand density=0.28) 1G G2 G3 G4 G5 0.22 0.00 0.03 0.46 0.92 0.00 0.67 0.25 0.13 0.40 0.03 0.25 0.27 0.15 0.08 0.46 0.13 0.15 0.76 0.96 0.92 0.40 0.08 0.96 1.00 0.00 0.08 0.00 0.08 0.00 G1 G2 G3 G4 G6 0.00 0.08 0.00 0.08 0.00 1.00 G1 G2 G3 G4 G5 G6 1G 0 0 0 1 1 0 Image Matrix G2 G3 G4 0 0 1 1 0 0 0 0 0 0 0 1 1 0 1 0 0 0 Number (60) 22 12 6 12 4 4 G5 1 1 0 1 1 0 G6 0 0 0 0 0 1 Table 5-3. Automorphically equivalent classes and the blockmodel for NELA executive committee 1898-1910 G1 G2 G3 G4 G5 Average Names NrmDegree 54% Atkinson, Copeland, Davis, Doherty, Farrand, Fergu-LA, Howell, Hunt, Insull, Peck, Robinson, Williams 37% Bean, Bemiss, Bottomle, Brock, Dow , Gardener, Gilbert, Gossler, Harries, Hartman, Hewitt, Perkins, Redman, Scott, Searle, Seely, Stevens, Wagner, Walbank, White, Young 24% Byllesby, Campbell, Dunham , Frueauff, Huntley, Martin-J, Martin-T, Smith-EL, Stone, Tait, Whitaker 96% DeCamp, Scovil 80% Edgar 36 Number (47) 12 22 11 2 1 37 Table 11. Presidency in NELA 1885~1910 (missing 1887a and 1888a) Year 1885a 1885b 1886a 1886b 1887b 1888b 1889a 1889b 1890a 1890b 1891a 1891b 1892 1893 1894 1895 1896 1897 1898 1899 1900 1901 1902 1903 1904 1905 1906 1907 1908 1909 1910 Name Morrison, Jm. Fr. Morrison, Jm. Fr. Morrison, Jm. Fr. Morrison, Jm. Fr. Morrison, Jm. Fr. Duncan, S.A. Weeks, E.R. Weeks, E.R. Perry, M.J. Perry, M.J. Perry, M.J. Huntley, C.R. Huntley, C.R. Ayer, James I. Armstrong, E.A. Francisco, M.J. Wilmerding, C.H. Nicholls, F. Insull, Samuel Young, A.M. Carnes, Samuel T. Cahoon, J. B. Ferguson, L. A. Edgar, C.L. Edgar, C.L. Davis, Earnest H. Blood, Wm. H. Williams, Arthur Farrand, Dudley Eglin, William C.L. Frueauff, Frank W. Firm Brush Electric Light Co Brush Electric Light Co Brush Electric Light Co Brush Electric Light Co Brush Electric Light Co Allegheny Electric Light Co Edison E L & P Co Edison E L & P Co Narragansett Electric Light Narragansett Electric Light Narragansett Electric Light Brush Electric Light Co Brush Electric Light Co Municipal Electric Light and Power Co. ? Rutland Electric Light Co Chi Arc Light & Power Co Toronto Incand Light&Power Edison-Chicago Poughkeepsie Light, Heat and Power Co. Memphis Light & Power Co ? Edison-Chicago Boston Edison Electric Boston Edison Electric EEIC-Williamsport, Pa. Seatlle Electric Co (NYC) Edison-New York Public Service Corp. Edison-Philadelphia Denver Gas and Electric Co. 37 Lighting System Brush Brush Brush Brush Brush Bruch Arc Edison Edison Thomson-Houston Thomson-Houston Thomson-Houston Brush Brush Forte Wayne, Heisler ? Thomson-Houston Thomson-Houston Edison Edison Thomson-Houston Thomson-Houston ? Edison Edison Edison Edison Edison Edison ? Edison ?