- Bucktrout-Braithwaite Papers, 1780/1996, bulk 1890/18991
- Burwell-Catlett Papers, 1794/18871
- Byers Family Papers, 1806/19291
- C-SPAN records, 1809/2012, bulk 1978/20121
- C. L. Worthington Papers, 1752/19381
- Cabaniss Family Papers, 1800/18371
- Cabell Family Papers, 1693/1913, bulk 1743/18231
- Campbell Family Papers II, 1795/19451
- Campbell Family Papers, 1726/19201
- Carl R. Dolmetsch Papers, 1751/19901
- Caroline Homassel Papers, 1796/18111
- Carpenter Papers, 1765/19221
- Carrington Family Papers, 1785/18301
- Carter Family Papers, 1667/1862, bulk 1792/18611
- Cazenove Family Papers (MS212), 1786/19701