- Chibbaro Stereograph Collection: 186u-1997581
- Church Session Books Excerpts, 1816-1901.1
- Circular Congregational Church Records, 1732-1796 (bulk 1800-1910s)538
- Circular letter, 1783 April 2 – From Guerard, Benjamin1
- City Council Minutes of Columbia, South Carolina10
- City Directories of South Carolina16
- City Engineers's Plat Book, 1671-1951256
- City Year Books for Charleston, South Carolina, 1880-195162
- City of Charleston Board of Architectural Review Photographs Collection43
- City of Charleston Collection113
- City of Charleston Zoning Ordinances1
- City of Charleston, SC, Report of the City Planning and Zoning Commission, Zone Maps10
- City of Spartanburg Collection10
- Civil Rights Films from Moving Image Research Collections212
- Civil Rights Films from USC's Moving Image Research Collections2
- Civil War Correspondence107
- Civil War Era Maps8
- Civil War Illustrations1
- Civil War Newspaper Illustrations376
- Civil War Pamphlets1,116