- North America113 objects
- The Americas113 objects
- United States113 objects
- California103 objects
- Modoc County, California103 objects
- Northeastern California103 objects
- Northern California103 objects
- Surprise Valley, Modoc County, California103 objects
- CA-Mod-197, Modoc County, California92 objects
- Nevada10 objects
- Washoe County, Nevada10 objects
- NV-Wa-183, Washoe County, Nevada8 objects
- CA-Mod-215, Modoc County, California7 objects
- CA-Mod-198, Modoc County, California1 objects
- CA-Mod-205, Modoc County, California1 objects
- CA-Mod-207, Modoc County, California1 objects
- CA-Mod-224, Modoc County, California1 objects
- NV-Wa-184, Washoe County, Nevada1 objects
- NV-Wa-187, Washoe County, Nevada1 objects