- AIDS Posters Collection388
- ARPANET Project Notes31
- Adams (Peggy Hamilton) Papers35
- Adelbert Bartlett Papers, 1922-1950417
- Afri-Comics11
- Africa Collections188
- Aldous and Laura Huxley Papers, 1925-2007577
- Alexander Klemin Papers, 1900-19502
- American College of Neuropsychopharmacology1
- Arai Family Papers, 1877-19721
- Archive of Confederación Campesina del Perú (CCP)30
- Archive of Sound and Vision, Institute of African Studies, University of Ibadan305
- Arkatov (James) collection9
- Arthur B. Spingarn Papers, ca. 1900-19711
- Aymara Language and Culture Audio-Visual Archive (Bolivia)17
- Bound Manuscripts Collection8
- Broadside Ballads from England, Ireland, and the United States.5
- Bunche (Ralph J.) Papers55
- C.C. Pierce Photographic Collection, circa 1898-193419
- Carey McWilliams Papers, 1894-1982 (bulk 1921-1980)5