Collection
- Abraham Lincoln Collection1
- Abraham Rudisill diary1
- Account Books1
- Account Ledger and Diary (Upstate New York)1
- Accounts, 19th Century1
- Acker Family Diaries1
- Adalbert J. Volck Collection of Etchings1
- Adam Empie Papers1
- Adams Papers1
- Adele Goodman Clark papers1
- Adin B. Underwood Papers,1
- Administration records collection1
- Admiral John Randolph Tucker Papers1
- Adolphus DeBussey, Soldier, Civil War Letters1
- Adolphus P. Howard Papers2