- A. Edwin Kendrew Papers, 1930/19591
- Alfred G. Lawson Log and Scrapbook, 1917/19191
- Alice Gates Goodman Scrapbook, 1936/19391
- Alice W. Barker Poetry Journal, 19191
- Alpha Delta Gamma Records, 1993/20121
- Alumni Band Organization Records, 1986/2012, bulk 1986/20001
- Amos Koontz Papers I, 1809/1965, bulk 1936/19651
- Arthur Samuel Burt Diary
1882-18901
- Benjamin Bray Papers, 1950/1999, bulk 1985/19951
- Benjamin Stoddert Ewell Papers, 1784/1934, bulk 1830/18921
- C. W. Murdaugh Papers, 1853/18781
- Carl A. Rickert Papers, 1941/19571
- Carlton Casey Papers, 1894/19991
- Chapin-Horowitz Cynogetica Collection, 1836/20141
- Circle K International Records, 1958/2009, bulk 1958/19641