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Collection place
- California67 objects
- North America67 objects
- The Americas67 objects
- United StatesRemove constraint Collection place: United States67 objects
- San Francisco Bay Area, California59 objects
- Contra Costa County, California53 objects
- CA-CCo-138, Oakley, Contra Costa County50 objects
- Oakley, Contra Costa County, California50 objects
- Northern California8 objects
- Northeastern California7 objects
- Berryessa Valley, Napa County, California6 objects
- Napa County, California6 objects
- CA-Nap-93, Berryessa Valley, Napa County5 objects
- CA-CCo-14, El Sobrante, Contra Costa County3 objects
- CA-Sis-262 (Foster site), Bogus Creek, Siskiyou County3 objects
- El Sobrante, Contra Costa County, California3 objects
- Lassen County, California3 objects
- Siskiyou County, California3 objects
- Unincorporated western Contra Costa County, California3 objects
- CA-Las-90 (Amedee Cave), Lassen County, California2 objects