- North America814 objects
- The Americas814 objects
- United States✖Remove constraint Collection place: United States814 objects
- California617 objects
- Northern California203 objects
- Southern California183 objects
- San Francisco Bay Area, California130 objects
- North Central California112 objects
- Nevada106 objects
- Sacramento County, California84 objects
- CA-Sac-2 or 3 or 6 ('Johnson Mound'), Sacramento County, California73 objects
- CA-Sac-6, Sacramento County, California73 objects
- Pershing County, Nevada70 objects
- Southern central United States60 objects
- Texas60 objects
- Northeastern California59 objects
- Channel Islands, Ventura County, California53 objects
- San Nicolas Island, Southern Channel Islands, Ventura County53 objects
- Ventura County, California53 objects
- Humboldt Lake Bed, Pershing County, Nevada52 objects