- Abraham Lincoln Ephemera from England, 1909/19301
- Academic Departments - Record Group 91
- Ackerly Family Papers11
- Ada Haldeman Ford, Suffragist, Papers, 1900/19701
- Adalbert J. Volck Collection of Etchings, 1861/19794
- Adam Empie Papers, 1811/2004, bulk 1811/18503
- Adam Finch Collection, 1891/19332
- Adam T. Finch Papers, 1895/19262
- Adamston Flat Glass Factory, Glass Cutting Tool, 1910/19301
- Addison H. Smith papers, 1917/1970, bulk 1917/19225
- Additional Henry Hughes Presler
Papers
ca.
1909-19651
- Adele Blow Chatfield-Taylor family papers, 1899/197727
- Adele Goodman Clark papers, 1849/197894
- Adin B. Underwood Papers, 1861/19262
- Administration records collection, 1776/19768