- North America✖Remove constraint Collection place: North America21,792 objects
- The Americas21,792 objects
- United States21,516 objects
- California13,331 objects
- Northern California8,718 objects
- Northeastern California6,021 objects
- Nevada5,551 objects
- Humboldt County, Nevada3,676 objects
- Black Rock Desert Wilderness, Humboldt County, Nevada3,228 objects
- East side of Black Rock Desert, Humboldt County, Nevada2,853 objects
- Lassen County, California2,588 objects
- North Central California2,146 objects
- San Francisco Bay Area, California2,005 objects
- Northern Sierras, Northern California1,559 objects
- Eastern California1,247 objects
- Sacramento County, California1,234 objects
- Karlo area, Lassen County, California1,198 objects
- CA-Las-7, Karlo area, Lassen County1,197 objects
- Modoc County, California1,052 objects
- Inyo County, California1,036 objects