- Eastern California452 objects
- Alaska443 objects
- Central Oregon436 objects
- Great Basin, United States420 objects
- Inyo County, California420 objects
- Southern Arizona416 objects
- Mendocino County, California409 objects
- Klamath County, Oregon402 objects
- Mexico396 objects
- NV-Ch-18 (Lovelock Cave), Churchill County, Nevada396 objects
- NV-Pe-12, Pershing County, Nevada362 objects
- Humboldt County, California357 objects
- Klamath Reservation, Klamath County, Oregon335 objects
- NV-Pe-8, Pershing County, Nevada289 objects
- Washington state251 objects
- Northwest Coast, United States246 objects
- Canada228 objects
- Klamath River, Humboldt County, California201 objects
- British Columbia, Canada199 objects
- Round Valley, Mendocino County, California196 objects