Collection place
- California20 objects
- North America20 objects
- The Americas20 objects
- United States20 objects
- CA-Nap-32, Napa Valley, Napa County11 objects
- Middle Napa Valley, Napa County, California11 objects
- Napa County, California11 objects
- Napa Valley, Napa County, California11 objects
- Rutherford area, Napa Valley, Napa County11 objects
- San Francisco Bay Area, California11 objects
- Northern California8 objects
- Humboldt County, California4 objects
- North Central California4 objects
- Northwestern California4 objects
- Sacramento County, California4 objects
- CA-Sac-2 or 3 or 6 ('Johnson Mound'), Sacramento County, California3 objects
- CA-Sac-6, Sacramento County, California3 objects
- Humboldt County coast, Humboldt County, California3 objects
- Humboldt lagoons, Humboldt County, California3 objects
- Big Lagoon, Humboldt County, California2 objects