Early expansion focused on both East and West Coast schools. After World War II, the fraternity saw even greater expansion into institutions across the United States. In 1956 the National Board of Directors created the "Delta Phi Epsilon International Society of Business and Foreign Affairs", which was to be open to both men and women. However, that society failed to develop, and by the 1960s, the Fraternity itself began to see a decline in the number of its chapters. In June 1972, Delta Phi Epsilon Foreign Service Sorority was founded, which for the next 30 years had but one chapter, Alpha, at Georgetown University. It held its first initiation at Alpha House of the Fraternity on February 24, 1973.