Names
- Clay, Lucius D. (Lucius DuBignon), 1897-1978.1
- Cleveland, Harlan.1
- Clevenger, Raymond Francis, 1926-1
- Cohen, Wilbur J. (Wilbur Joseph), 1913-1987.1
- Coleman, John Strider, 1897-1958.1
- Connable, Alfred B. (Alfred Barnes), 1904-1
- Cooper, John Sherman, 1901-1
- Cooper, John Sherman, 1901-1991.1
- Corbett, Robert J. (Robert James), 1905-1971.1
- Council of Ten.1
- Cousins, Norman.1
- Crawford, Fred L., 1888-1957.1
- Cunningham, Sarah Jane.1
- Curtis, Thomas B. (Thomas Bradford), 1911-1
- Curtis, Thomas B. (Thomas Bradford), 1911-1993.1
- Cutler, Richard Loyd, 1925-1
- Dahlberg, Edwin T. (Edwin Theodore), 1892-1986.1
- Delta College.1
- Dennis, Don.1
- Developing Great Lakes Megalopolis Research Project.1