Names
- Condon, Randall J. (Randall Judson), 1862-1931.1
- Congress of Industrial Organizations (U.S.)1
- Cook, William W. (William Wilson), 1858-1930.1
- Corwin, Edward Samuel, 1878-1963.1
- Cramton, Louis C. (Louis Convers), 1875-1
- Cramton, Louis Kay.1
- Crane, Ronald S. (Ronald Salmon), 1886-1967.1
- Crane, Verner W., 1889-1974.1
- Crane, Verner Winslow, 1889-1
- Cross, Arthur Lyon, 1873-1940.1
- Cross, Wilbur L. (Wilbur Lucius), 1862-1948.1
- Cudney, Charles H., 1828-1904.1
- Cummins, Albert Baird, 1850-1926.1
- Curtis, William Eleroy, 1850-1911.1
- Cutcheon, Byron M., 1836-1908.1
- Cyrus G. Luce1
- D. Appleton and Company.1
- D.A. Reynolds1
- David Jewell1
- Davis, Calvin Olin, 1871-1