- Chicago, Rock Island, and Pacific Railway Company1
- Cincinnati & Eastern Railroad Company1
- Cincinnati, Indianapolis, St. Louis, and Chicago Railway Company1
- Claytor, Robert B. (Robert Buckner), 1922-19931
- Claytor, W. Graham (William Graham), 1886-19711
- Cram, George Franklin, 1841-19281
- Cresson, John H.1