Names
- Clements, William L. (William Lawrence), 1861-1934.1
- Clothier, Florence, 1903-1
- Coffey, Wilford L., 1879-1
- Coffman, Lotus Delta, 1875-1938.1
- Cogley, John, 1916-1
- Cogley, John.1
- Cohen, Wilbur J. (Wilbur Joseph), 1913-1987.1
- 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
- Coolidge, Calvin, 1872-1933.1
- Copeland, Royal S. (Royal Samuel), 1868-1938.1
- Council of Ten.1
- Cousins, Norman, 1912-1
- Cousins, Norman.1
- Cowles, John, 1898-19831
- Cowles, John, 1898-1983.1
- Cowley, W. H. (William Harold), 1899-1978.1