Names
- Campbell, William Wallace, 1862-1938.1
- Carmichael, Leonard, 1898-1
- Carmichael, Leonard, 1898-1973.1
- Catholepistemiad (Detroit, Mich.)1
- Cisler, Walker L. (Walker Lee), 1897-1994.1
- Cisler, Walker Lee, 1897-1
- Clements, William L. (William Lawrence), 1861-1934.1
- Colby, Martha Guernsey, -1958.1
- Colby, Walter F. (Walter Francis), 1880-1
- Cooley, Mortimer E. (Mortimer Elwyn), 1855-1944.1
- Crawford, Ivan Charles, 1886-1960.1
- Curtis family.1
- Curtis, Heber Doust, 1872-19421
- Curtis, Robert R.1
- Darrow, Clarence, 1857-1938.1
- Dennison, David M. (David Mathias), 1900-1976.1
- Detroit Observatory.1
- Dodson, Helen Walter, 1905-1
- Dunham, Theodore J., 1897-1
- Edmondson, Frank K, 1912-1