Des Moines Register 04-24-06 Community Pulse Sorority donates books to promote literacy The members of Delta Sigma Theta Sorority Inc. donated books to the Evelyn Davis Child Care Center Thursday in Des Moines as part of a statewide service project to promote early literacy. The center operates on a fee-for-service basis from 6:45 a.m. to 6 p.m. weekdays for children 3 months to 5 years old. Delta Sigma Theta is a nonprofit, public service sorority. In Iowa, there are more than 500 members in five alumnae chapters in Ames, Davenport-Moline (Ill.), Des Moines, Iowa City and Waterloo, and collegiate chapters at the University of Iowa, Drake University, Iowa State University and the University of Northern Iowa.