- North America18 objects
- The Americas18 objects
- United States18 objects
- Nevada10 objects
- Washoe County, Nevada10 objects
- California8 objects
- NV-Wa-197, Washoe County, Nevada8 objects
- CA-SMa-151 (Phleger Mound), Princeton, San Mateo County5 objects
- Half Moon Bay, San Mateo County, California5 objects
- Princeton, San Mateo County, California5 objects
- San Francisco Bay Area, California5 objects
- San Mateo County, California5 objects
- CA-Mod-214, Modoc County, California3 objects
- Modoc County, California3 objects
- Northeastern California3 objects
- Northern California3 objects
- Surprise Valley, Modoc County, California3 objects
- NV-Wa-199, Surprise Valley, Washoe County2 objects