- California✖Remove constraint Collection place: California373 objects
- Contra Costa County, California373 objects
- North America373 objects
- San Francisco Bay Area, California373 objects
- The Americas373 objects
- United States373 objects
- CA-CCo-138, Oakley, Contra Costa County296 objects
- Oakley, Contra Costa County, California296 objects
- CA-CCo-250, Concord, Contra Costa County65 objects
- Concord, Contra Costa County, California65 objects
- CA-CCo-150, Veale Tract, Contra Costa County9 objects
- Unincorporated eastern Contra Costa County, California9 objects
- Veale Tract, Contra Costa County, California9 objects