Collection place
- Sacramento County, California2,314 objects
- Surprise Valley, Modoc County, California2,191 objects
- Napa Valley, Napa County, California2,052 objects
- Northwestern California2,000 objects
- Siskiyou County, California1,765 objects
- Placer County, California1,551 objects
- Fresno County, California1,546 objects
- Middle Napa Valley, Napa County, California1,428 objects
- Churchill County, Nevada1,359 objects
- Southern California1,349 objects
- Karlo area, Lassen County, California1,346 objects
- CA-Las-7, Karlo area, Lassen County1,337 objects
- CA-Mod-204, Modoc County, California1,301 objects
- Pershing County, Nevada1,197 objects
- CA-Sac-2 or 3 or 6 ('Johnson Mound'), Sacramento County, California1,146 objects
- CA-Sac-6, Sacramento County, California1,146 objects
- Eagle Lake, Lassen County, California1,119 objects
- Marin County, California1,069 objects
- Contra Costa County, California1,055 objects
- Shasta County, California991 objects