- North America✖Remove constraint Collection place: North America34 objects
- The Americas34 objects
- United States34 objects
- California16 objects
- Northwestern United States12 objects
- Oregon12 objects
- Central Oregon11 objects
- Klamath County, Oregon11 objects
- Klamath Reservation, Klamath County, Oregon11 objects
- Northern California11 objects
- Northeastern California10 objects
- Northern Sierras, Northern California7 objects
- Tuolumne County, California6 objects
- Churchill County, Nevada5 objects
- Nevada5 objects
- CA-Sis-2, Tule Lake, Siskiyou County3 objects
- Groveland, Tuolumne County, California3 objects
- NV-Ch-35 (Humboldt Cave), Churchill County, Nevada3 objects
- Riverside County, California3 objects
- Siskiyou County, California3 objects