- Alexander Tedford "Ted" Barclay correspondence, 1861/18641
- Alfred E. Bradley Papers, 1864/1922, bulk 1916/19181
- Alfred Leyburn Papers, 1823/1899, bulk 1830/18391
- Allen-Kean-Laurence family letters, 1837/19601
- Alumni Association Records, 1833/2014, bulk 1950/20051
- American Civil War collection, 1860/18951
- Amos Koontz Papers I, 1809/1965, bulk 1936/19651
- Anderson Family papers, 1755/19581
- Andrew C. L. Gatewood papers, 1860/19936
- Andrew Given Family Correspondence, 1859/18861
- Andrew J. McCoy Civil War letters, 1863/18641
- Ann Smith Academy Papers, 1807/19101
- Anson Du Puy Van Buren letters, 1863/19971
- Armistead Boothe Papers (MS164), 1803/19901
- Armistead-Cocke Papers, 1680/19171