- North America✖Remove constraint Collection place: North America9 objects
- The Americas9 objects
- United States9 objects
- Nevada7 objects
- Churchill County, Nevada5 objects
- NV-Ch-35 (Humboldt Cave), Churchill County, Nevada5 objects
- California2 objects
- North Central California2 objects
- Northern California2 objects
- Sacramento County, California2 objects
- CA-Sac-2 or 3 or 6 ('Johnson Mound'), Sacramento County, California1 objects
- CA-Sac-52 (Snyder Mound), Sacramento County, California1 objects
- CA-Sac-6, Sacramento County, California1 objects
- Douglas County, Nevada1 objects
- Elko County, Nevada1 objects
- Gardnerville, Douglas County, Nevada1 objects
- NV-El-25, Elko County, Nevada1 objects