- North America15 objects
- The Americas15 objects
- United States15 objects
- California12 objects
- CA-Tri-58, Trinity County, California11 objects
- Northern California11 objects
- Northwestern California11 objects
- Trinity County, California11 objects
- Trinity Lake, Trinity County, California11 objects
- Douglas County, Nevada3 objects
- NV-Do-12 (Hobo Hot Springs), Douglas County, Nevada3 objects
- Nevada3 objects
- CA-Nap-39 (Tulukai site), Napa Valley, Napa County1 objects
- Lower Napa Valley, Napa County, California1 objects
- Napa County, California1 objects
- Napa Valley, Napa County, California1 objects
- San Francisco Bay Area, California1 objects