- C. Ernest Edgar III papers, 1956/20101
- Capital Outlay Records, 1954/19911
- Carl A. "Pappy" Fehr papers, 1907/2012, bulk 1945/19741
- Carl R. Dolmetsch Papers, 1751/19901
- Carlton Casey Papers, 1894/19991
- Caroline Baytop Sinclair Papers, 1938-1993, 1938/19931
- Carter Lowance Papers, 1860/1993, bulk 1942/19881
- Cece Bell Papers, 1988/20171
- Charles Edward Gary, Jr. Papers, 1870/2000, bulk 1940/19801
- Charles F. Bryan, Jr. papers, 1958/20021
- Charlotte Kaufman Papers, 1980/19901
- Chloe Lang and Tom Leback Theresa Pollak collection, 1962/2003, bulk 1974/20031
- Christmas Activities Collection, 1942/20021
- Christopher Bram Papers, 1968/2014, bulk 1975/20001
- Claudia Stevens papers, 1967/20231