- North America2 objects
- The Americas2 objects
- United States2 objects
- CA-CCo-151, El Sobrante, Contra Costa County1 objects
- California1 objects
- Central Washington1 objects
- Contra Costa County, California1 objects
- El Sobrante, Contra Costa County, California1 objects
- Klickitat County, Central Washington1 objects
- Northwestern United States1 objects
- San Francisco Bay Area, California1 objects
- Unincorporated western Contra Costa County, California1 objects
- Wakemap mound, Klickitat County, Washington1 objects
- Washington state1 objects