- Bumstead, Joseph, 1768?-18381
- C.S. Francis & Co.1
- CHEST Journal1
- Cadell, T. (Thomas), 1773-18361
- Cady & Burgess1
- Carey & Lea1
- Carlisle, David, 1771-18352
- Cell Reports3
- Charles E. Merill Co. 1
- Charles Scribner and Company5
- Chemnitz, Druck von J.C.F. Pickenhahn, 18771
- Christopher Sower Company1
- Cincinnati (Ohio). Department of Public Works1
- Cincinnati Art Museum1
- Cincinnati Children's Hospital Medical Center1
- Cincinnatus Association1
- City of Boston1
- Clark & Hesser1
- College of Design, Architecture, Art and Planning1
- Collins & Brother1