Creator
- Christ Episcopal Church (Owosso, Mich.) records.1
- Christian, Palmer.1
- Christiancy, Isaac Peckham, 1812-18901
- Clippert family.1
- Cole, Edward Nicholas, 1909-19771
- Cole, Miner T., 1839-19111
- Comstock, Lorin L., 1825-18631
- Comte, Victor E., 1833-18641
- Conant family.1
- Conely, Thomas Jefferson, 1836-18991
- Cooley, Charles Horton, 1864-19291
- Cooley, Lyman Edgar, 1850-19171
- Cooley, Thomas McIntyre, 1824-18981
- Cope, Helen Gibson, collector1
- Cramton, Louis C. (Louis Convers), 1875-1
- Crane, Salmon, 1812-18881
- Crapo, Henry Howland, 1804-18691
- Crittenden, Albert Robinson, 1867-19331
- Culver, Mary M.1
- D'Ooge, Martin Luther, 1839-19151