Sigma Gamma Rho, Inc., an international sorority founded in 1922. With over 500 chapters and membership of more than 90,000, Sigma Gamma Rho, Inc. has provided young women with a strong community-service role and a lifetime of friendship and professional contacts. An historically African-American sorority, it is part of the National Pan-Hellenic Council. Group photograph of 13 members of the California State University, Northridge chapter, circa 1983. Black and white photograph, 8 x 10 in.