- Carnation Company1
- Charles B. Knox Co., Johnstown, New York1
- Charles B. Knox Gelatine Co., Inc, Johnstown, New York1
- Charles B. Knox Gelatine Co., Inc, Johnstown, New York;1
- Charles B. Knox Gelatine Co., Inc.1
- Charles B. Knox Gelatine Co., Inc., Johnstown, New York, Montreal, Canada1
- Charles Gulden, Inc.1
- Charleston County Register Mesne Conveyance1
- Chicago Flexible Shaft Company1
- Chr. Hansen's Laboratory, Inc.;The Junket Folks1
- Church & Dwight Co., Inc.1
- Cobb Preserving Co.1
- College of Pharmacy; Waring Historical Library (MUSC)1
- College of Pharmacy;Waring Historical Library (MUSC)1
- Cookware Company of America1
- Corn Products Refining Co.1
- Corn Products Refining Company1
- Cribben and Sexton Company1
- Curtice Brothers Co.1
- Deepfreeze;Motor Products Corporation1