Collection place
- North America12 objects
- The Americas12 objects
- United States12 objects
- California7 objects
- Northern California6 objects
- CA-Sac-2 or 3 or 6 ('Johnson Mound'), Sacramento County, California5 objects
- CA-Sac-6, Sacramento County, California5 objects
- Nevada5 objects
- North Central California5 objects
- Sacramento County, California5 objects
- Churchill County, Nevada3 objects
- South Carson Lakebed, Churchill County, Nevada3 objects
- Byron Tract, Contra Costa County, California1 objects
- CA-CCo-145, Byron Tract, Contra Costa County1 objects
- CA-Las-194, Surprise Valley, Lassen County1 objects
- Contra Costa County, California1 objects
- Humboldt County, Nevada1 objects
- Lassen County, California1 objects
- NV-Hu-300, Humboldt County, Nevada1 objects
- NV-Pe-8, Pershing County, Nevada1 objects