Collection place
- California511 objects
- North America511 objects
- The Americas511 objects
- United States511 objects
- San Francisco Bay Area, California279 objects
- Northern California232 objects
- Contra Costa County, California138 objects
- CA-CCo-138, Oakley, Contra Costa County132 objects
- North Central California132 objects
- Oakley, Contra Costa County, California132 objects
- Berryessa Valley, Napa County, California129 objects
- CA-Nap-93, Berryessa Valley, Napa County129 objects
- Napa County, California129 objects
- Tehama County, California117 objects
- Northeastern California99 objects
- CA-Teh-1 (Kingsley Cave), Tehama County, California77 objects
- Shasta County, California59 objects
- CA-Sha-52, Shasta County, California55 objects
- Fall River Valley, Shasta County, California55 objects
- CA-Teh-193 (Payne Cave), Tehama County, California40 objects