Names
- Cincinnati Northern Railroad Company.1
- Cincinnati, Jackson and Mackinaw Railway Company.1
- Cincinnati, Saginaw and Mackinaw Railroad Company.1
- Cleveland, Cincinnati, Chicago, and St. Louis Railway Company.1
- Cleveland-Cliffs Iron Company.1
- Cobbs & Mitchell.1
- Columbus, Chicago and Indiana Central Railway Company.1
- Comstock, William Alfred, 1877-1949.1
- Conger, Ivan.1
- Cooley, Mortimer E. (Mortimer Elwyn), 1855-1944.1
- Couzens, James, 1872-1936.1
- Crawford and Manistee River Railway Company.1
- Crawford, Fred L., 1888-1957.1
- Cummer Lumber Company.1
- Cummer Sons Cypress Company.1
- Cummer-Diggins Company.1
- Curwood, James Oliver, 1878-19271
- Curwood, James Oliver, 1878-1927.1
- Cutler & Savidge Lumber Company.1
- D.N. McLeod Lumber Company.1