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- The Americas✖Remove constraint Collection place: The Americas442 objects
- United States439 objects
- Churchill County, Nevada418 objects
- Nevada418 objects
- Humboldt Lake region, Churchill County, Nevada342 objects
- NV-Ch-15, Churchill County, Nevada342 objects
- NV-Ch-18 (Lovelock Cave), Churchill County, Nevada76 objects
- Southwestern United States19 objects
- Arizona17 objects
- Northeastern Arizona6 objects
- Canada2 objects
- Eastern Arizona2 objects
- British Columbia, Canada1 objects
- Great Plains, North America1 objects
- Northern Plains, Great Plains, North America1 objects
- Northern central United States1 objects
- Northwest Coast, United States1 objects
- Northwestern United States1 objects
- Nova Scotia, Canada1 objects