- Adam Empie Papers, 1811/2004, bulk 1811/18501
- Adam Finch Collection, 1891/19331
- Adam T. Finch Papers, 1895/19261
- Addison Family Papers, 1890/18991
- Adin B. Underwood Papers, 1861/19261
- Administration records collection, 1776/197618
- Admiral John Randolph Tucker Papers, 1865/18972
- Advisory Committee Research Collection, 1772/201712
- African American Family Photographs, 1880/19601
- African American and Hampton Normal Institute Postcards, 1897/19131
- African American man tintype portrait, 1865/19001
- Alan R. Shirkey photograph collection, 1877/19172
- Albert C. Swindler Papers, 1862/1929, bulk 1862/18641
- Albert Frederick Wilson papers, 1840/19341
- Albert R. Gallatin papers, 1795/18281