- California106 objects
- Contra Costa County, California✖Remove constraint Collection place: Contra Costa County, California106 objects
- North America106 objects
- San Francisco Bay Area, California106 objects
- The Americas106 objects
- United States106 objects
- CA-CCo-138, Oakley, Contra Costa County76 objects
- Oakley, Contra Costa County, California76 objects
- CA-CCo-151, El Sobrante, Contra Costa County27 objects
- El Sobrante, Contra Costa County, California27 objects
- Unincorporated western Contra Costa County, California27 objects
- Bethel Island, Contra Costa County, California3 objects
- CA-CCo-20, Bethel Island, Contra Costa County3 objects
- San Joaquin River Delta, Contra Costa County, California3 objects