- C. A. Sprinkel and Co. Daybooks, 1860/18631
- C. B. Anderson Account Book, 1907/19091
- C. B. Anderson Records, 1884/19102
- C. David Loeks Papers, 1947/199713
- C. Harrison Mann, Jr. map collection, 1579/196191
- C. L. Weast Account Books, 1890/189112
- C. S. Buchanan Augusta Military Academy scrapbook, 1918/1944, bulk 1918/19191
- C. Sterling Hutcheson Papers, 1925-196922
- C. W. J. Phelps International Military Tribunal for the Far East collection, 1945/19481
- C. W. Murdaugh Papers, 1853/18783
- COVID-19 Pandemic Web Archives, 2020197
- Cabell Family Papers, 1693-1913, 1743-1823.271
- Cabell Family Papers, 1693/1913, bulk 1743/1823332
- Calder Smith Sherwood, III Papers, 1899/197613
- Cale Young Rice Collection
1904, 19252