Names
- Cripple Creek and Colorado Springs Railroad Company.1
- Croghan, William.1
- Crossley, Richard, 1920-1
- Crystal Palace (Great Exhibition, 1851, London, England)1
- Cully, John.1
- Cundiff, Willard1
- Curtis, George William, 1824-1892--Portraits.1
- Cushman, Charlotte, 1816-1876--Portraits.1
- Cutler, Elbridge Jefferson, 1831-1870.1
- Dana, Charles A. (Charles Anderson), 1819-1897--Portraits.1
- Darrah, William C. (William Culp), 1909-1989--Portraits.1
- Darwin, Charles, 1809-1882--Portraits.1
- Daughters of the American Revolution.1
- Davis, Jefferson, 1808-1889--Portraits.1
- Davis, O. T. (Ory Thomas)1
- Deerfoot Farms Company.1
- Delaware and Hudson Canal Company.1
- Denver and Rio Grande Railway Company.1
- Dickinson, Anna E. (Anna Elizabeth), 1842-1932--Portraits.1
- Dickinson, Donald McDonald, 1846-1917--Portraits.1