Collection
- Albert G. Fuller reminiscences, [1930s]1
- Alexander Dunlop memorandum book, 1686-1688, 16991
- Alexandre Maurice Blanc de Lanautte, Comte d'Hauterive collection, 18091
- Alexis St. Martin collection, 18791
- Algae from Fort Jefferson, Tortugas, Florida, [ca. 1864?]1
- Alice L. Gardner diary, 18861
- Alicia A. and William G. Bakewell letters, 18451
- Almon Wheeler memorandum of travels, 18271
- American Tour photograph album, 18931
- Amherst, Massachusetts photograph album, 19341
- Amis A. Madry letters, 19181
- Amos A. Evans collection, 1812, 1813, 18331
- Andrew J. Duncan journal and orderly book, 1861; 1864-18651
- Andrew Robinson Giddinge diary, 18351
- Andrew T. Goodrich family correspondence, 1802, 1810-1813, 18161
- Andrew Turnbull collection, 17861
- Ann Arbor (Mich.) Merchant's account book, 1833, 1849 (majority within 1849)1
- Annie E. L. Hobbs journal, 18761
- Anthony H. Hoskins letter books, 1860-1861, 1869-18721
- Apollo 11 Moon Mission commentary, 19691