- Alembert, Jean Le Rond d’, 1717-17832
- Alexander, G. J.--Autograph.2
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- Allbutt, T. Clifford (Thomas Clifford), 1836-19252
- Allen, Bennet, b. 1736 or 71
- Allen, Charles Dexter, 1865-19261
- Allen, Edgar, 1892-19432
- Alling, Arthur Nathaniel, 1862-19491
- Alut Kangermio, 1822-18692
- Amador, Don,--1942-1992 --Portraits2
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- American Asiatic Association1
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- American Sunday-School Union1
- American-Hawaiian Steamship Company1
- Ames, Edward1
- Ames, Louise Bates, 1908-19961
- Amson, John1
- Ancon (Steamship)--Pictorial works2
- Anderdon, John1
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