Collection place
- North America4,017 objects
- The Americas4,017 objects
- United States4,017 objects
- Nevada2,472 objects
- California1,544 objects
- San Francisco Bay Area, California1,285 objects
- Napa County, California1,098 objects
- Napa Valley, Napa County, California1,093 objects
- Pershing County, Nevada1,067 objects
- Middle Napa Valley, Napa County, California902 objects
- Rutherford area, Napa Valley, Napa County733 objects
- CA-Nap-32, Napa Valley, Napa County698 objects
- Humboldt Lake Bed, Pershing County, Nevada683 objects
- Humboldt County, Nevada650 objects
- Black Rock Desert Wilderness, Humboldt County, Nevada412 objects
- Churchill County, Nevada376 objects
- NV-Hu-22, Humboldt County, Nevada242 objects
- NV-Pe-5, Pershing County, Nevada218 objects
- Northern California193 objects
- Contra Costa County, California169 objects