Collection place
- North America483 objects
- The Americas483 objects
- United States483 objects
- California267 objects
- Nevada207 objects
- Northern California182 objects
- Northeastern California162 objects
- Modoc County, California150 objects
- Surprise Valley, Modoc County, California137 objects
- Churchill County, Nevada125 objects
- CA-Mod-204, Modoc County, California115 objects
- Humboldt Lake region, Churchill County, Nevada99 objects
- NV-Ch-15, Churchill County, Nevada95 objects
- San Francisco Bay Area, California69 objects
- Napa County, California58 objects
- Napa Valley, Napa County, California56 objects
- Washoe County, Nevada53 objects
- NV-Wa-183, Washoe County, Nevada42 objects
- Middle Napa Valley, Napa County, California34 objects
- CA-Nap-1 (Goddard Mound), Napa Valley, Napa County33 objects