- A. E. Dick Howard papers, 1928/20171
- A. E. F. Price Certificates,, 1883/18852
- A. H. Hand Papers, 1835/20092
- A. J. Davis Family Collection, 1874/2007, bulk 1874/19079
- A. K. Leake Papers, 1872/19403
- A. S. Lara papers, 1856/18611
- A. Willis Robertson Papers, 1921/1988, bulk 1946/19663
- A.B. Stickney, Compiler, Genealogical Materials, 1838/19591
- A.C.L. Gatewood Papers, 1801/19191
- A.J. Morrison Collection, 1754/19751
- A.L. Pugh, Receipts and Correspondence, 1885/18861
- A.S. Hammack papers, 1864/19542
- Abner Osburn, Physician, Papers, 1846/19011
- Abolitionist Movement Collection, 1834/18881
- Abraham Lincoln Collection, 1860/19651