Collection place
- North America71 objects
- The Americas71 objects
- California64 objects
- United States64 objects
- Northern California25 objects
- San Francisco Bay Area, California23 objects
- Contra Costa County, California19 objects
- North Central California17 objects
- Central California11 objects
- Central California coast11 objects
- Monterey County, California11 objects
- CA-CCo-138, Oakley, Contra Costa County10 objects
- CA-Mnt-282, Southern Monterey Coast, Monterey County10 objects
- Oakley, Contra Costa County, California10 objects
- Southern Monterey Coast, Monterey County, California10 objects
- Sacramento County, California9 objects
- Calaveras County, California8 objects
- Northeastern California8 objects
- Northern Sierras, Northern California8 objects
- Unincorporated western Contra Costa County, California8 objects