The Society of Georgia Archivists maintains a list of selected archival repositories in the state of Georgia:
Use Archive Grid to locate special collections in libraries and archives across North America. For example, you can search for people, agencies, keyword, location, or specific libraries.
These aren't comprehensive databases! You still need to check other finding aids.
GSU Library Special Collections and Archives Located on the 8th floor of Library South. Collection areas are Southern Labor, Popular Music, Women's Collections, Georgia Government Documentation Project, University Archives, Rare Books, and Photographs.
Atlanta History Center Archives (Kenan Research Center) Collects primary and secondary source materials in all formats conveying the history of Atlanta and the culture of the American south. Besides Atlanta materials, collection strengths include the Civil War, southeast family history, architecture & decorative arts, and garden history.
Georgia Archives Run by the Archives & History Division of the Georgia government - collects, manages, and preserves official records of Georgia from 1732 to the present. Materials include vital records, land records, federal and state census records, photographs, and much more.
Auburn Avenue Research Library on African-American Culture and History A division of the Atlanta-Fulton Public Library System - the nation's second largest archives specializing in the history of African Americans and Africans in the Diaspora. Collection info
The William Breman Jewish Heritage & Holocaust Museum This cultural center and archive collects artifacts and information about Jewish history. Areas of strength include the Holocaust and the experience of Jews in the Southeast, particularly Georgia and Alabama.
Emory University's Manuscript, Archives and Rare Book Library (MARBL) Collections span more than 800 years of history — with particular depth in modern literature, African American history, and the history of Georgia and the South.
Hargrett Rare Book and Manuscript Library of the University of Georgia Includes the Rare Book Collection, Historical Manuscripts, and the Georgiana Collection. Subject interests include Georgia, book arts, theater, music, history, literature, journalism and genealogy.
Robert W. Woodruff Library, Atlanta University Center Library services Morehouse College, Spelman College, Clark Atlanta University, and the Interdenominational Theological Seminary. The core of the manuscript holdings document civil rights, race relations, education, literature, visual and performing arts, religion, politics, and social work.