Collection place
- California21 objects
- North America21 objects
- The Americas21 objects
- United States21 objects
- San Francisco Bay Area, California15 objects
- CA-CCo-138, Oakley, Contra Costa County11 objects
- Contra Costa County, California11 objects
- Oakley, Contra Costa County, California11 objects
- Northern California6 objects
- Berryessa Valley, Napa County, California4 objects
- CA-Nap-93, Berryessa Valley, Napa County4 objects
- Napa County, California4 objects
- CA-Sac-168 (Erich site), Sacramento County, California3 objects
- Humboldt County coast, Humboldt County, California3 objects
- Humboldt County, California3 objects
- North Central California3 objects
- Northwestern California3 objects
- Sacramento County, California3 objects
- CA-Hum-182, Humboldt County, California2 objects
- Point Delgada, Humboldt County, California2 objects