- Alcan1
- Alexander, Peggy1
- Alford, L. W.2
- Alford, W. D.1
- Allen Bros. 17 Cornhill, Boston1
- Allport, Frank 1856-19351
- Allsbrook, Nina M.1
- Alston, Charles1
- Alston, Charles, 1796-18811
- Alston, R. P.3
- Amaker, Julius1
- American Autograph Shop1
- American Cancer Society1
- American Cystoscope Makers, Inc., New York, New York1
- American Optical Company, Southbridge, Massachusetts2
- American Optical, Inc.1
- Analavange, Robert1
- Anderson, N. C.1
- Anderson, R. W.1
- Andrew A. Kroeg Pharmacist, Charleston, South Carolina1