- North America✖Remove constraint Collection place: North America290 objects
- The Americas290 objects
- United States290 objects
- California182 objects
- North Central California182 objects
- Northern California182 objects
- Sacramento County, California125 objects
- Nevada84 objects
- CA-Sac-2 or 3 or 6 ('Johnson Mound'), Sacramento County, California68 objects
- CA-Sac-6, Sacramento County, California68 objects
- CA-Sac-107 (Windmiller Mound), Sacramento County, California48 objects
- Churchill County, Nevada42 objects
- CA-Col-1 (Miller Mound), Colusa County, California41 objects
- Colusa County, California41 objects
- NV-Ch-56, Churchill County, Nevada25 objects
- Northern Utah24 objects
- Southwestern United States24 objects
- Utah24 objects
- Humboldt County, Nevada20 objects
- Tooele County, Utah20 objects