Institution
- Canadian International Paper Company1
- Carnegie Institution of Washington1
- Carrington Laboratories1
- Case Western Reserve University1
- Catalytica, Inc.1
- Catholic Institute for Teachers1
- Catholic University of America1
- Center for Cancer Research, MIT1
- Cetus Corporation1
- Chemical Heritage Foundation1
- Ciba Pharmaceutical Company1
- City University of New York. City College1
- Cold Spring Harbor Laboratory2
- College of Environmental Science and Forestry1
- Columbia University8
- Cornell University3
- Cornell University. Joan and Sanford I. Weill Medical College1
- Council on Competitiveness (U.S.)1
- Courtaulds (Firm)1
- DX Imaging1