Names
- Clark, John Bates, 1847-1938.1
- Clements, William L. (William Lawrence), 1861-19341
- Cleveland, Cincinnati, Chicago, and St. Louis Railway Company.1
- Cocker, Benjamin Clark.1
- Coffey, Hobart R., 1896-1969.1
- Coller, Frederick A.1
- Colorado and Southern Railway.1
- Commons, John Rogers, 1862-1945.1
- Conant, Charles A. (Charles Arthur), 1861-1915.1
- Cooley, Charles Horton, 1864-1929.1
- Cooley, Lyman Edgar, 1850-1917.1
- Cooley, Thomas McIntyre, 1824-1898.1
- Cornell University1
- Coulter, Glenn Monroe, 1894-1
- Couzens, James, 1872-1936.1
- Crane, Verner W., 1889-1974.1
- Crane, Verner Winslow, 1889-1
- Cross family.1
- Cross, Arthur Lyon, 1873-19401
- Cross, Arthur Lyon, 1873-1940.1