Collection place
- Napa Valley, Napa County, California71 objects
- Northern Channel Islands, Santa Barbara County, California57 objects
- Santa Cruz Island, Channel Islands, Southern California57 objects
- Middle Napa Valley, Napa County, California56 objects
- Berryessa Valley, Napa County, California55 objects
- CA-Mrn-232 (Estero Mound), Drakes Bay, Marin County51 objects
- CA-Nap-93, Berryessa Valley, Napa County51 objects
- CA-Nap-32, Napa Valley, Napa County45 objects
- Rutherford area, Napa Valley, Napa County45 objects
- Alameda County, California41 objects
- Oakley, Contra Costa County, California41 objects
- CA-CCo-138, Oakley, Contra Costa County39 objects
- Colusa County, California39 objects
- Unincorporated western Contra Costa County, California33 objects
- CA-Mrn-307, Drakes Bay, Marin County28 objects
- San Joaquin County, California27 objects
- CA-SCrI-100, Santa Cruz Island, Channel Islands26 objects
- CA-Mrn-266, Tomales Point, Point Reyes24 objects
- Tomales Point, Point Reyes, Marin County24 objects
- CA-Col-1 (Miller Mound), Colusa County, California23 objects