Collection place
- North America1,014 objects
- The Americas1,014 objects
- United States1,013 objects
- California1,000 objects
- San Francisco Bay Area, California814 objects
- Contra Costa County, California750 objects
- CA-CCo-138, Oakley, Contra Costa County579 objects
- Oakley, Contra Costa County, California579 objects
- Northern California184 objects
- North Central California179 objects
- Sacramento County, California127 objects
- CA-Sac-2 or 3 or 6 ('Johnson Mound'), Sacramento County, California106 objects
- CA-Sac-6, Sacramento County, California106 objects
- CA-CCo-141, Palm Tract, Contra Costa County94 objects
- Palm Tract, Contra Costa County, California94 objects
- Unincorporated eastern Contra Costa County, California94 objects
- Unincorporated western Contra Costa County, California68 objects
- CA-CCo-151, El Sobrante, Contra Costa County61 objects
- El Sobrante, Contra Costa County, California61 objects
- Napa County, California41 objects