Collection place
- California504 objects
- North America504 objects
- The Americas504 objects
- United States504 objects
- San Francisco Bay Area, California269 objects
- Northern California197 objects
- Contra Costa County, California111 objects
- Northeastern California109 objects
- Calaveras County, California108 objects
- Northern Sierras, Northern California108 objects
- CA-Cal-83, Calaveras County, California101 objects
- Napa County, California78 objects
- North Central California65 objects
- El Sobrante, Contra Costa County, California56 objects
- Unincorporated western Contra Costa County, California56 objects
- CA-CCo-138, Oakley, Contra Costa County54 objects
- Oakley, Contra Costa County, California54 objects
- Alameda County, California53 objects
- CA-CCo-151, El Sobrante, Contra Costa County43 objects
- Central California37 objects