Names
- Clark, John Bates, 1847-1938.1
- Clements, William L. (William Lawrence), 1861-1934.1
- Cleveland, Cincinnati, Chicago, and St. Louis Railway Company.1
- Clowry, Robert Charles, 1838-1925.1
- 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
- D'Ooge, Martin Luther, 1839-1915.1
- Dawson, William Mercer Owens, 1853-1916.1
- Detroit United Railway.1
- Dewey, Davis Rich, 1858-1942.1
- Dewey, John 1859-1952.1
- Dewey, John, 1859-1952.1
- Dixon, Frank Haigh, 1869-1
- Dixon, Frank Haigh, 1869-.1
- Dow, Earle Wilbur, 1868-19461