Collection place
- The Americas652 objects
- North America647 objects
- United States631 objects
- California521 objects
- San Francisco Bay Area, California322 objects
- Napa County, California195 objects
- Northern California157 objects
- Northeastern California135 objects
- Napa Valley, Napa County, California131 objects
- Middle Napa Valley, Napa County, California126 objects
- CA-Las-194, Surprise Valley, Lassen County116 objects
- Lassen County, California116 objects
- Surprise Valley, Lassen County, California116 objects
- Nevada108 objects
- Churchill County, Nevada94 objects
- CA-Nap-32, Napa Valley, Napa County74 objects
- Rutherford area, Napa Valley, Napa County74 objects
- CA-SMa-151 (Phleger Mound), Princeton, San Mateo County70 objects
- Half Moon Bay, San Mateo County, California70 objects
- Princeton, San Mateo County, California70 objects