- A.C.L. Gatewood Papers, 1801/19191
- Abner Johnson Leavenworth Papers, 1825/18611
- Abraham Davenport Ledger, 1804/18331
- Account Book, Richmond, Virginia, 1824/18361
- Adam Empie Papers, 1811/2004, bulk 1811/18501
- Adam Rinica and George Rinica Account Book, 1822/18481
- Alexander Brown Papers (I), 1815/19101
- Alexander Haight family collection, 1764/19761
- Amos Johnson Ledgers, 1808/1861, bulk 1808/18211
- Amos Koontz Papers I, 1809/1965, bulk 1936/19651
- Andrew Kincannon Ledger, 1808/18371
- Andrew Reid Account Book, 1787/18371
- Andrew Steele Fulton Account Books, 1825/18341
- Archibald Stuart Ledgers, 1757/18521
- Armistead-Cocke Papers, 1680/19171