- North America3 objects
- The Americas3 objects
- United States3 objects
- California2 objects
- CA-Cal-82, Calaveras County, California1 objects
- CA-SNI-NL-4, San Nicolas Island, Southern Channel Islands1 objects
- Calaveras County, California1 objects
- Channel Islands, Ventura County, California1 objects
- Churchill County, Nevada1 objects
- Humboldt Lake region, Churchill County, Nevada1 objects
- NV-Ch-15, Churchill County, Nevada1 objects
- Nevada1 objects
- Northeastern California1 objects
- Northern California1 objects
- Northern Sierras, Northern California1 objects
- San Nicolas Island, Southern Channel Islands, Ventura County1 objects
- Southern California1 objects
- Ventura County, California1 objects