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Collection place
- North America8 objects
- The Americas8 objects
- United States8 objects
- California5 objects
- Churchill County, Nevada3 objects
- Contra Costa County, California3 objects
- Nevada3 objects
- San Francisco Bay Area, California3 objects
- Amador County, California2 objects
- CA-Ama-3 (Bamert Cave), Amador County, California2 objects
- CA-CCo-138, Oakley, Contra Costa County2 objects
- Northeastern California2 objects
- Northern California2 objects
- Northern Sierras, Northern California2 objects
- Oakley, Contra Costa County, California2 objects
- CA-CCo-151, El Sobrante, Contra Costa County1 objects
- El Sobrante, Contra Costa County, California1 objects
- NV-Ch-18 (Lovelock Cave), Churchill County, Nevada1 objects
- NV-Ch-19 (Fish Cave), Churchill County, Nevada1 objects
- NV-Ch-35 (Humboldt Cave), Churchill County, Nevada1 objects