Collection place
- North America556 objects
- The Americas556 objects
- United States556 objects
- California497 objects
- Northern California416 objects
- Northeastern California412 objects
- Modoc County, California411 objects
- Surprise Valley, Modoc County, California411 objects
- CA-Mod-204, Modoc County, California232 objects
- CA-Mod-197, Modoc County, California90 objects
- Central California63 objects
- Fresno County, California62 objects
- South Central California62 objects
- Nevada59 objects
- Washoe County, Nevada43 objects
- CA-Mod-203, Modoc County, California37 objects
- CA-Mod-199, Modoc County, California19 objects
- NV-Wa-187, Washoe County, Nevada17 objects
- Humboldt County, Nevada14 objects
- Black Rock Desert Wilderness, Humboldt County, Nevada12 objects