Originally the local Alpha Alpha, Sigma was installed in 1912 with 27 charter initiates. In the early years, the chapter rented houses, but in 1920, a corner lot was purchased and the house was completed by 1927. In 1940 a stone front porch was added; in 1944 a lot to the north of the house was purchased; in 1951 expansion on the house began and in 1953 the chapter moved into the new part of the house, which was financed by alumnae contributions. Sigma was the first chapter to computerize its finances. One of the 100 pillars at Illinois' Memorial Stadium, which honor Illini who died in World War I, is in the name of Sigma alumna Gladys Kilpatrick - the only woman to whom a column was dedicated. She was an Army nurse who died on duty. Grand Council members include Frances Morehouse, Augusta Bond Smith, Helen Newton Murray, Ruth Petty Palmer and Margaret Hope Hallet Long who served as Adelphean Editor. Frances Morehouse served in countless capacities and her father assisted with Greek translation when the sorority's name was changed to Alpha Delta Pi. Sallie Patterson Pagels and Gina Faso contributed in many ways, including serving many years as international officers. Ruth Christ Pusich served on House Corporation for years. Jo Ellen Karr Campbell has served in many ways, including as a Foundation Trustee.