- Allston, Robert Francis Withers Allston, 1801-18644
- Allston, Robert Francis Withers, 1801-186421
- Allston, William1
- Alman & Co.1
- Alston, Charles1
- Alston, Charles, 1796-18811
- American News Company, New York2
- Anderson Studio1
- Anderson, Richard O., Robertson, Alexander1
- Art Photo Greeting Co., Elizabeth, N.J.1
- Atkinson C.J.1
- Atkinson, Samuel T.1
- Atlantic Coast Lumber Company1
- Bache, A.D. (Alexander Dallas),1806-18671
- Bachrack Studios, New York, Philadelphia, Baltimore, Washington1
- Bacon, William, 1873-19081
- Baker, Perry4
- Ball, Ann, 1776-18404
- Baruch, Belle Wilcox, 1899-19645
- Base Photographic Section, United States Army Air Corps2