- North America✖Remove constraint Collection place: North America50 objects
- The Americas50 objects
- United States44 objects
- California19 objects
- Northwestern United States16 objects
- Alaska15 objects
- Northern California14 objects
- Northwestern California12 objects
- Interior Alaska10 objects
- Yukon-Koyukuk Census Area, Alaska10 objects
- Lower Yukon to Kuskokwim, Yukon-Koyukuk Census Area, Alaska6 objects
- Nevada6 objects
- Humboldt County, California5 objects
- Churchill County, Nevada4 objects
- Lower Yukon, Yukon, Yukon-Koyukuk Borough4 objects
- NV-Ch-18 (Lovelock Cave), Churchill County, Nevada4 objects
- Southern Alaska4 objects
- Yukon, Yukon-Koyukuk Census Area, Alaska4 objects
- Aleutian Islands, Alaska3 objects
- Canada3 objects