Collection place
- North America20 objects
- The Americas20 objects
- United States20 objects
- California13 objects
- Northeastern California11 objects
- Northern California11 objects
- Modoc County, California7 objects
- CA-Mod-204, Modoc County, California6 objects
- NV-Wa-46, Washoe County, Nevada6 objects
- Nevada6 objects
- Surprise Valley, Modoc County, California6 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
- CA-Fre-293, Fresno County, California1 objects
- CA-Las-125, Eagle Lake, Lassen County1 objects