Collection place
- South Central California1,471 objects
- Sacramento County, California1,455 objects
- San Francisco Bay Area, California1,415 objects
- CA-Mod-204, Modoc County, California1,297 objects
- Fresno County, California1,262 objects
- CA-Sac-2 or 3 or 6 ('Johnson Mound'), Sacramento County, California1,002 objects
- CA-Sac-6, Sacramento County, California1,002 objects
- Pershing County, Nevada979 objects
- Lava fields, Siskiyou County, California940 objects
- CA-Sis-7, Lava fields, Siskiyou County894 objects
- Canby's Cross, Lava fields, Siskiyou County894 objects
- Eagle Lake, Lassen County, California886 objects
- Southern Great Lakes states, United States824 objects
- Martis Valley, Placer County, California821 objects
- Humboldt Lake Bed, Pershing County, Nevada732 objects
- Southeastern United States695 objects
- Northeastern United States694 objects
- CA-Pla-5 or 6, Placer County, California648 objects
- Napa County, California637 objects
- Lower Klamath Lake Area, Siskiyou County, California578 objects