- Butler, Nicholas Murray, 1862-1947.1
- Carnegie Endowment for International Peace.1
- Churchill, Clementine, 1885-1977.1
- Clothing and dress--History--20th century.1
- Clothing and dress--United States--History--20th century.1
- Clowns.1
- Cohn, Jack, 1889-1956.1
- Columbia Pictures Industries.1
- Composers.1
- Conductors (Music)1
- Coolidge, Calvin, 1872-1933--Family.1
- Coolidge, Grace Goodhue, 1879-1957.1
- Coolidge, John, 1906-2000.1
- Couples.1
- Crowds.1
- Curtis, Charles, 1860-1936.1
- D'Annunzio, Gabriele.1
- Dance--Germany.1
- Dance.1
- Dancers.1