Collection place
- Cairo, Egypt1 objects
- Calaveras County, California6 objects
- Caliente Creek, Walker Basin, Kern County1 objects
- California161 objects
- Cambodia6 objects
- Cameroon13 objects
- Canada9 objects
- Canadian Arctic, Canada8 objects
- Carcross, Yukon Territory, Canada1 objects
- Caribbean Islands7 objects
- Caroline Islands9 objects
- Cenderawasih Bay, Papua Province, Indonesia1 objects
- Central Africa100 objects
- Central America10 objects
- Central Asia1 objects
- Central California16 objects
- Central Jalemo, Snow Mountains, West New Guinea8 objects
- Central Mexico45 objects
- Central Peru5 objects
- Central Plains, Great Plains, North America1 objects