- Constitution (Frigate)4
- Construction industry.4
- Coolidge, Calvin, 1872-1933--Family.4
- Coolidge, Grace Goodhue, 1879-1957--Family.4
- Cornell University--Football.4
- Criminal justice, Administration of--United States.4
- Crying in infants.4
- Dams.4
- Dawes, Charles Gates, 1865-1951.4
- Deer.4
- Demonstrations.4
- Deserts.4
- Dever, William E. (William Emmett), 1862-1929.4
- Diving.4
- Dog breeds.4
- Dog racing.4
- Domestic animals.4
- Doumergue, Gaston, 1863-1937.4
- Dwarfs.4
- Edison, Thomas A. (Thomas Alva), 1847-1931.4