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Collection place
- California12 objects
- North America12 objects
- The Americas12 objects
- United States12 objects
- Contra Costa County, California8 objects
- San Francisco Bay Area, California8 objects
- CA-CCo-138, Oakley, Contra Costa County7 objects
- Oakley, Contra Costa County, California7 objects
- North Central California4 objects
- Northern California4 objects
- CA-Sac-2 or 3 or 6 ('Johnson Mound'), Sacramento County, California3 objects
- CA-Sac-6, Sacramento County, California3 objects
- Sacramento County, California3 objects
- CA-CCo-141, Palm Tract, Contra Costa County1 objects
- CA-Col-3 (Sandhill site), Colusa County, California1 objects
- Colusa County, California1 objects
- Palm Tract, Contra Costa County, California1 objects
- Unincorporated eastern Contra Costa County, California1 objects