Collection place
- Central Plains, Great Plains, North America1 objects
- Central Region, Uganda9 objects
- Chahuatlán, Veracruz, Mexico1 objects
- Chambri Lakes, Sepik River, Papua New Guinea1 objects
- Charapan municipality, Michoacán, Mexico9 objects
- Chiapas, Mexico3 objects
- Chico, Butte County, California3 objects
- Chihuahua, Mexico1 objects
- Chile1 objects
- Chin Hills, Myanmar9 objects
- Chin, Chin Hills, Myanmar8 objects
- China52 objects
- Clarkdale, Yavapai County, Arizona1 objects
- Coachella Valley, Riverside County, California3 objects
- Cochise County, Arizona1 objects
- Cochiti Pueblo, Sandoval County, New Mexico6 objects
- Colombia1 objects
- Colorado Desert, Riverside County, California3 objects
- Congo Basin, Africa46 objects
- Cordillera Administrative Region, Luzon Island, Luzon island group17 objects