- ????? (Japan) (1)
- ????????, ?. ? (1)
- A.L. Bancroft & Company (1)
- Aa, Pieter van der, 1659-1733 (1)
- Abert, J. W. (James William), 1820-1897 (1)
- Adams, Sebastian C (2)
- Agas, Radulph, 1540?-1621 (1)
- Akrel, Fredrik, 1748-1804 (1)
- Albin, John, active 1791-1800 (1)
- Alden, William C. (William Clinton), 1871-1959 (1)
- Allen, James, 1806-1846 (1)
- Allen, R. C (1)
- American Bank Note Company (3)
- American Express Company (1)
- American Geographical Society of New York (29)
- American Immigration Company (1)
- American Immigration Company (Chippewa Falls, Wis.) (1)
- American Union Telegraph Company (1)
- Amundson, H. C (1)
- Amy, M. S (1)
