- North America10 objects
- The Americas10 objects
- California9 objects
- United States9 objects
- San Francisco Bay Area, California3 objects
- Santa Clara County, California2 objects
- CA-CCo-138, Oakley, Contra Costa County1 objects
- CA-Sac-56 (Mosher site), Sacramento County, California1 objects
- Contra Costa County, California1 objects
- North Central California1 objects
- Northern California1 objects
- Oakley, Contra Costa County, California1 objects
- Sacramento County, California1 objects