Collection place
- The Americas6,517 objects
- North America6,439 objects
- United States6,392 objects
- California4,277 objects
- Northern California3,166 objects
- Northeastern California1,969 objects
- North Central California923 objects
- Siskiyou County, California922 objects
- Nevada887 objects
- Pershing County, Nevada722 objects
- Humboldt Lake Bed, Pershing County, Nevada699 objects
- Sacramento County, California525 objects
- San Francisco Bay Area, California520 objects
- Southern Great Lakes states, United States465 objects
- Lava fields, Siskiyou County, California462 objects
- CA-Sis-7, Lava fields, Siskiyou County456 objects
- Canby's Cross, Lava fields, Siskiyou County456 objects
- CA-Sac-2 or 3 or 6 ('Johnson Mound'), Sacramento County, California445 objects
- CA-Sac-6, Sacramento County, California445 objects
- Modoc County, California422 objects