- A.C. Wagner Company (Cincinnati, Ohio)1
- AECOM (Firm)1
- AFL-CIO1
- AFL-CIO. Atlanta Labor Council1
- AFL-CIO. Civil Rights Department9
- ATE Management and Service Company, Inc.1
- Ackerman, Virginia MacMahon, 1939-2
- Adams (Atlanta, Ga.)1
- Adams, John Kirby, 1910-19891
- Adams, Katharine1
- Adams, Katherine, 1914-19941
- Adams, Molly1
- Adams-Cates Company (Atlanta, Ga.)1
- Adamson Printing Company (Atlanta, Ga.)2
- Addy, Ervin E., 1829-18621
- Allan, John Talbot, 1919-20111
- Alpha Xi Delta4
- Alston, Cotten (Robert Cotten), 1945-21
- American News Company1
- Anderson, David Clay5
