Collection place
- North America31 objects
- The Americas31 objects
- United States31 objects
- California23 objects
- Northern California20 objects
- Northeastern California19 objects
- Modoc County, California14 objects
- Surprise Valley, Modoc County, California13 objects
- Nevada8 objects
- CA-Mod-197, Modoc County, California7 objects
- CA-Mod-204, Modoc County, California6 objects
- NV-Wa-46, Washoe County, Nevada6 objects
- Washoe County, Nevada6 objects
- Northern Sierras, Northern California3 objects
- CA-Pla-5 or 6, Placer County, California2 objects
- CA-Pla-5, Placer County, California2 objects
- Central California2 objects
- Placer County, California2 objects
- South Central California2 objects
- Barro area, Napa Valley, Napa County1 objects