- North America6 objects
- The Americas6 objects
- United States6 objects
- California5 objects
- CA-SMa-151 (Phleger Mound), Princeton, San Mateo County4 objects
- Half Moon Bay, San Mateo County, California4 objects
- Princeton, San Mateo County, California4 objects
- San Francisco Bay Area, California4 objects
- San Mateo County, California4 objects
- CA-Mod-211, Modoc County, California1 objects
- Modoc County, California1 objects
- NV-Wa-187, Washoe County, Nevada1 objects
- Nevada1 objects
- Northeastern California1 objects
- Northern California1 objects
- Surprise Valley, Modoc County, California1 objects
- Washoe County, Nevada1 objects