Collection
- Abraham Lincoln Collection1
- Account Booklets with John W. Crist2
- Account Ledger and Diary (Upstate New York)2
- Acker Family Diaries5
- Ackerly Family Papers8
- Adalbert J. Volck Collection of Etchings4
- Adam Empie Papers2
- Adam Finch Collection2
- Adam T. Finch Papers2
- Addison Family Papers2
- Adele Blow Chatfield-Taylor family papers4
- Adele Goodman Clark papers9
- Adin B. Underwood Papers,2
- Administration records collection14
- Adolphus DeBussey, Soldier, Civil War Letters2