Collection place
- North America31 objects
- The Americas31 objects
- United States31 objects
- California24 objects
- San Francisco Bay Area, California22 objects
- Middle Napa Valley, Napa County, California12 objects
- Napa County, California12 objects
- Napa Valley, Napa County, California12 objects
- Oakville area, Napa Valley, Napa County12 objects
- CA-CCo-141, Palm Tract, Contra Costa County9 objects
- CA-Nap-1 (Goddard Mound), Napa Valley, Napa County9 objects
- Contra Costa County, California9 objects
- Palm Tract, Contra Costa County, California9 objects
- Unincorporated eastern Contra Costa County, California9 objects
- Churchill County, Nevada7 objects
- Nevada7 objects
- NV-Ch-56, Churchill County, Nevada6 objects
- CA-Nap-45, Napa Valley, Napa County3 objects
- Coachella Valley, Riverside County, California2 objects
- Colorado Desert, Riverside County, California2 objects