Names
- Collier, William Miller, 1867-1956.1
- Colorado and Southern Railway.1
- Commons, John Rogers, 1862-1945.1
- Comstock, William Alfred, 1877-1949.1
- Conant, Charles A. (Charles Arthur), 1861-1915.1
- Cooley, Lyman Edgar, 1850-1917.1
- Cooley, Mortimer Elwyn, 1855-1944.1
- Copeland, Royal Samuel, 1868-1938.1
- Cork, James M. (James Murle), 1894-1
- Cork, James Murle, 1894-1957.1
- Cornell University1
- Corwin, Edward Samuel, 1878-1963.1
- Coudert, Frederic R. (Frederic René), 1871-1
- Coudert, Frederick R. (Frederick Rene), 1871-1
- Coursey, Richard R.1
- Courtis, Stuart A. (Stuart Appleton), 1874-1969.1
- Couzens, James Joseph, 1872-1936.1
- Couzens, James, 1872-1936.1
- Cowden, Roy William, 1883-1961.1
- Craig, James Alexander, 1855-1932.1