- Burridge, L. S.1
- Caldwell, Charles, 1772-18531
- Campbell, Henry Fraser, 1824-18911
- Campbell, Robert.1
- Carpenter, William Benjamin, 1813-18851
- Carson, Joseph, 1808-18761
- Cartwright, Samuel A. (Samuel Adolphus), 1793-1863, author1
- Caspari, Karl Gottlob, 1798-18281
- Cazenave, P.-L. Alphée (Pierre-Louis Alphée), 1795-18771
- Central New York Homoeopathic Society.1
- Chabert, J. X. (Julien Xavier), 1792-18591
- Channing, William F. (William Francis), 1820-19011
- Churchill, Fleetwood, 1808-18781
- Clapp, A. (Asahel)1
- Clark, Henry G. (Henry Grafton), 1804?-18921
- Combe, George, 1788-18581
- Cooke, George.1
- Cornell, William Mason, 1802-18951
- Cotting, Benjamin Eddy, 1812-18971
- Creamer, Hannah Gardner.1