- A. Nees & Co1
- A. P. Proctor2
- A. Pattiani, Photographer, No. 75 Lake Street, Chicago, ILL1
- A. R. W[aud]1
- A. S., Gent1
- A. Z., Heer1
- A. Z., Heer.3
- A. and J. Churchill (Booksellers : London, England)1
- A. and W. Galignani (Firm)1
- A.A.1
- A.B.2
- A.C. Shewey & Co1
- A.G. Gaston Motel (Birmingham, Ala.)1
- A.L. Bancroft & Company3
- A.M.D., printmaker1
- A.P. Watt (Firm)25
- A.W. Elson & Co1
- ACT UP (Organization)2
- AFL-CIO1
- Aa, Pieter van der, 1659-17335