Collection place
- North America1,801 objects
- The Americas1,801 objects
- United States1,801 objects
- California1,795 objects
- Northern California1,336 objects
- Northeastern California1,335 objects
- Northern Sierras, Northern California1,335 objects
- Placer County, California1,334 objects
- Martis Valley, Placer County, California1,175 objects
- San Francisco Bay Area, California433 objects
- Contra Costa County, California284 objects
- Richmond, Contra Costa County, California206 objects
- Marina Bay, Richmond, Contra Costa County169 objects
- CA-CCo-300, Richmond, Contra Costa County164 objects
- CA-Pla-5 or 6, Placer County, California157 objects
- CA-Son-371, Sonoma County, California126 objects
- Petaluma Valley, Sonoma County, California126 objects
- Sonoma County, California126 objects
- CA-CCo-259, Rodeo, Contra Costa County75 objects
- Rodeo, Contra Costa County, California75 objects