May Week was developed at the 2nd national convention in 1920 at Wilberforce University. The initial graduate chapters ended up approved in 1920 at the Second National Convention for graduate associates in New York City and Washington, D.C. Delta Sigma Theta was the initially countrywide African-American corporation to collaborate with Habitat for Humanity International in 1992, in the course of National President Bertha Roddey's administration.