Names
- Coffman, Lotus Delta, 1875-1938.1
- Cogley, John, 1916-1
- Cogley, John.1
- Cohen, Benjamin V.1
- Colby, Bainbridge, 1869-1950.1
- Collier, John, 1884-1968.1
- Compton, Arthur Holly, 1892-1962.1
- Compton, K. T. (Karl Taylor), 1887-1954.1
- Conference for Progressive Labor Action.1
- Cook, Franklin Mead, 1863-1
- Cooley, Mortimer E. (Mortimer Elwyn), 1855-1944.1
- Copeland, Royal S. (Royal Samuel), 1868-1938.1
- Corcoran, Thomas Gardiner, 1900-1
- Cousins, Norman, 1912-1
- Cousins, Norman.1
- Couzens, Frank, 1902-1950.1
- Cowley, W. H. (William Harold), 1899-1978.1
- Cowley, William Harold, 1899-1
- Cram, Esther Marsh.1
- Creighton, Joseph.1