Place
- Brome1
- Butte1
- Ca. 1 mi. NW of Ready Lake1
- California1
- Caribou Island1
- Caribou Island, Lake Superior1
- Carroll1
- Chatsworth1
- Cheboygan1
- Clara Twp., Greenbough Esker, W. side of Brent Rd., Grid-066145 (31 L/1) NW. of Windigo Lake1
- Clarendon1
- Clarendon Parish; Mason River Savannah1
- Clear Lake near Novar1
- Connecticut1
- Consolación del Sur1
- Corozal1
- Creighton Marsh, T46N, R16W, NE1/4 SW1/4 NE1/4 sec.121
- Cuba1
- Delta1
- Detroit.1