Graduate Schools of Library Science, Education, and Business Administration were established in 1941, 1944, and 1946, respectively. The Atlanta School of Social Work, long associated with the university, gave up its charter in 1947 to become an integral part of the university. In 1957, the controlling Boards of the six institutions (Atlanta University; Clark, Morehouse, Morris Brown and Spelman Colleges; and Gammon Theological Seminary) ratified new Articles of Affiliation.