- C-SPAN records, 1809/2012, bulk 1978/201214,430
- C. A. Detrick Diary, 1899/19001
- C. A. Sprinkel and Co. Daybooks, 1860/18631
- C. B. Anderson Records, 1884/19105
- C. B. Gardener Treasury Ledger, 1863/18641
- C. Batchelder Commonplace Book, 1894/19052
- C. C. Driver and Co. Ledger, I, 1910/19121
- C. C. Driver and Co. Ledger, II, 1913/19141
- C. David Loeks Papers, 1947/1997131
- C. E. Branscome Papers, 1958/19602
- C. E. Sydnor & Co. Letters to Tarter Bros., 18981
- C. Ernest Cooke Papers, 1920/196013
- C. Eugene Rowe Papers, 1949/1987257
- C. F. Sugg papers,
1882-192213
- C. F. Weldon poetry notebook, 19211