Book excerpt: With information on over 500 organizations, their founders and membership, this unique encyclopedia is an invaluable resource on the history of African-American activism. Entries on both historical and contemporary organizations include: * African Aid Society * African-Americans for Humanism * Black Academy of Arts and Letters * Black Women's Liberation Committee * Minority Women in Science * National Association of Black Geologists and Geophysicists * National Dental Association * National Medical Association * Negro Railway Labor Executives Committee * Pennsylvania Freedmen's Relief Association * Women's Missionary Society, African Methodist Episcopal Church * and many more.