Institution
- Chester Historical Society. Chester County (S.C.)501
- Chicago Flexible Shaft Company1
- Chicken of the Sea2
- Chr. Hansen's Laboratory, Inc.;The Junket Folks1
- Church & Dwight Co., Inc.1
- City of Charleston105
- Clemson University Libraries1,933
- Cobb Preserving Co.1
- College of Charleston Libraries5,673
- College of Pharmacy; Waring Historical Library (MUSC)1
- College of Pharmacy;Waring Historical Library (MUSC)1
- Colleton County Memorial Library10
- Cookware Company of America1
- Corn Products Refining Co.1
- Corn Products Refining Company1
- Cribben and Sexton Company1
- Crisco2
- Crosley4
- Curtice Brothers Co.1
- Deepfreeze;Motor Products Corporation1