Names
- Carrie Post1
- Carroll Lathrop Post1
- Carroll Post1
- Cass, Lewis, 1782-1866.1
- Chandor, Mrs. Douglas1
- Charles Rollin Post1
- Charles William Post1
- Chester, Colby, Jr.1
- Citizen's Industrial Association of America1
- Citizens' Industrial Association of America.1
- Clark, J. Reuben (Joshua Reuben), 1871-1961.1
- Clayton, Powell, 1833-1914.1
- Climax Corn Company1
- Close, Edward Bennett, 1882-1955.1
- Columbia University1
- Committee for a More Beautiful Capitol1
- Crapo, Henry Howland, 1804-1869.1
- Daniels, Josephus, 1862-1948.1
- Davies, Joseph1
- Davies, Joseph Edward.1