- C. Barrett Graham papers, 1967/20161
- Cadet Life, Organizations, and Activities, 18451
- Capital Club of Williamsburg Records, 1960/2015, bulk 1970/20003
- Carlin Family Genealogy, 1886/20151
- Carol B. Hannum Drawings of Dogs, 1997/20184
- Carol Barton papers, 1973/20206
- Carol Berger Chicago performing arts playbills collection, 1988/201510
- Carol O'Neale Culnan Architectural Collection, 1966/20161
- Caroline Brandt papers, 1964/20208
- Carolyn Rhodes Papers, 1924/20192
- Carrie Koeturius Papers, 1982/20183
- Carroll LaHaye Collection, 1980/2020, bulk 1996/20051
- Carroll Wilkinson Papers, 1914/2018, bulk 1979/201822
- Catalogs (PB-01), 1936/20207
- Cayce / Reilly School of Massage Collection, 1985-20151