“Solar Houses: An Architectural Lift in Living” In 1936, the Libbey-Owens-Ford Glass Company, based in Toledo, Ohio, developed a new product called “thermopane”. It consisted of two panes of glass, sealed around a thin separating air space; as such, it provided significantly more insulation than a single sheet of glass. Given the simultaneous interest in modern architectural strategies that used wide expanses of glass, thermopane was aggressively marketed by L-O-F towards architects and their clients. To some extent, this was simply the continuation of an L-O-F marketing campaign for the picture window, a large window facing into the living room. But the premise of solar heating made it different – with an all-glass south facing façade, modern houses were seen to be able to take advantage of solar energy as an “auxiliary heat source;” the insulation provided by thermopane, however meager when compared to a masonry or insulated wall, helped to establish a logic for solar heated houses across the Midwest and northeast. The pamphlet “Solar Houses: An Architectural Lift in Living,” reproduced here, was just one of a number of promotional initiatives. In another example, L-O-F sent out a sample newspaper with front-page stories about the demonstration solar house they encouraged newspapers editors to engage architects and the industry building industry and build in their own small towns. LibbeyOwens-Ford offered to assist the newspaper in finding a builder who would bear the cost of construction as well as department stores and manufacturers who would contribute furnishings and appliances, and in securing the participation of “banks, landscape architects, utilities and other interested factors” who were also presumed to also be advertisers in the paper. Further opportunities were identified in “popularity contests to find the girl with the ‘sunniest disposition’ to reign for a day as hostess of the solar house”, and in the prospect of donating the house – after a brief exhibition period – to “the city’s most deserving veteran and his family.” ( Libbey-Owens-Ford, “The SOLAR HOUSE: A SURE FIRE PROMOTION Made-to-Order for Your Newspaper,” 1944, in Libbey-Owens-Ford Archives, Ward Canady Center for Rare Books and Special Collections, University of Toledo.) L-O-F also worked with Simon and Schuster to publish Your Solar House: A Book of Practical Homes for all Parts of the Country in 1944, which chose well-known architects to illustrate a possible solar house, one per state. They also distributed, free of charge, “sun angle calculators” to interested architects. In this fashion, Libbey-Owens-Ford – who also provided all of the glass for the well-known Case Study House program from 1944-1963 – was interested not only on encouraging clients to ask for houses with thermopane, but was strategically focused on the architect-client relationship as a place where new knowledge about the environment could develop. “See your architect” the end of the “Architectural Lift” pamphlet suggests, trusting that the professional, well informed by their devices and brochures, will lead the client to a glassfilled future. Daniel Barber See his article “Tomorrow’s House: Solar Housing in 1940s America,” in Technology and Culture 55:1 (January, 2014).