Collection place
- California649 objects
- North America649 objects
- The Americas649 objects
- United States649 objects
- San Francisco Bay Area, California482 objects
- Contra Costa County, California252 objects
- CA-CCo-138, Oakley, Contra Costa County246 objects
- Oakley, Contra Costa County, California246 objects
- Berryessa Valley, Napa County, California224 objects
- CA-Nap-93, Berryessa Valley, Napa County224 objects
- Napa County, California224 objects
- Northern California166 objects
- North Central California109 objects
- Tehama County, California97 objects
- CA-Teh-1 (Kingsley Cave), Tehama County, California55 objects
- Northeastern California54 objects
- CA-Teh-193 (Payne Cave), Tehama County, California42 objects
- Shasta County, California37 objects
- CA-Sha-52, Shasta County, California21 objects
- Fall River Valley, Shasta County, California21 objects