- North America124 objects
- The Americas124 objects
- United States124 objects
- Nevada123 objects
- Churchill County, Nevada118 objects
- NV-Ch-35 (Humboldt Cave), Churchill County, Nevada113 objects
- Humboldt Lake region, Churchill County, Nevada5 objects
- NV-Wa-37, Washoe County, Nevada4 objects
- Washoe County, Nevada4 objects
- CA-Col-1 (Miller Mound), Colusa County, California1 objects
- California1 objects
- Colusa County, California1 objects
- NV-Pe-63, Pershing County, Nevada1 objects
- North Central California1 objects
- Northern California1 objects
- Pershing County, Nevada1 objects