Names
- Comstock, William Alfred, 1877-1949.1
- Congress of Industrial Organizations (U.S.)1
- Corcoran, Thomas Gardiner, 1900-1
- Coughlin, Charles E. (Charles Edward), 1891-1979.1
- Couzens, James, 1872-1936.1
- Creighton, Joseph.1
- Crittenberg, Willis.1
- Cromwell, James Henry Roberts.1
- Cropley, Charles Elmore.1
- Cudney, Charles H., 1828-1904.1
- Cummings, Homer S.1
- Curley, James M.1
- Curtis, William Eleroy, 1850-1911.1
- Cutcheon, Byron M., 1836-1908.1
- Cyrus G. Luce1
- D.A. Reynolds1
- Daniels, Josephus, 1862-1948.1
- David Jewell1
- Davies, Joseph Edward.1
- De Kruif, Paul, 1890-1971.1