- Cable cars (Streetcars)1
- Caillaux, Joseph, 1863-1944.2
- Calhoun, John C. (John Caldwell), 1782-18501
- Calves.1
- Cameras.1
- Campbell Soup Company.1
- Camping sites, facilities, etc.1
- Canada.1
- Canning and preserving.1
- Cannon, James, 1864-1944.1
- Capitalists and financiers.1
- Capitol Hill (Washington, D.C.)3
- Capitol pages.2
- Cappella musicale Pontificia.1
- Capper, Arthur, 1865-1951.1
- Captive wild animals.1
- Caraway, Hattie Wyatt, 1878-1950.1
- Carlyle House (Alexandria, Va.)1
- Carnival costume.1
- Carter, Jimmy, 1924-1