African-American women joined sororities as early as 1908, when Alpha Kappa Alpha sorority was founded at Howard University. It aims to provide “services to all mankind.” Civil rights activist Coretta Scott King was among its well-known members. Also founded at Howard University was Delta Sigma Theta sorority, in 1913. The organization is concerned with public and mental health, economic health, and other issues. Famed members now deceased or living include actresses Lena Horne and Ruby Dee, and singer Roberta Flack.