- Adin B. Underwood Papers, 1861/19262
- Administration records collection, 1776/197616
- Adolphus DeBussey, Soldier, Civil War Letters, 1861/1998, bulk 1861/18712
- Adolphus P. Howard Papers, 1850/19381
- Advertisement Trade Card for "Quignon-Rombach", 1880/19201
- Advisory Committee Research Collection, 1772/201714
- African American Family Photographs, 1880/19601
- African American Family photograph album, 1910/19602
- African American Photographic Portraits, 1880/19531
- African American Postcards, 19101
- African American and Hampton Normal Institute Postcards, 1897/19132
- African and African American photograph collection, 1850/19451
- Al Gross Papers, 1909/20001
- Alan Clarke Railroad Research Papers, 1861/201228
- Alan R. Shirkey photograph collection, 1877/191714