Collection place
- Santa Barbara County, California83 objects
- Santa Rosa Island, Santa Barbara Channel Islands, Southern California81 objects
- San Joaquin County, California79 objects
- CA-Cal-83, Calaveras County, California78 objects
- Alameda County, California41 objects
- CA-SJo-43, San Joaquin County, California38 objects
- Colusa County, California33 objects
- Napa County, California31 objects
- CA-Ala-329 (Ryan Mound), Coyote Hills, Fremont30 objects
- Fremont, Alameda County, California30 objects
- CA-Col-1 (Miller Mound), Colusa County, California29 objects
- Napa Valley, Napa County, California26 objects
- CA-SJo-68, San Joaquin County, California24 objects
- CA-SRI-60, Santa Rosa Island, Channel Islands24 objects
- Central California23 objects
- El Sobrante, Contra Costa County, California23 objects
- Unincorporated western Contra Costa County, California23 objects
- CA-Nap-32, Napa Valley, Napa County21 objects
- Middle Napa Valley, Napa County, California21 objects
- Rutherford area, Napa Valley, Napa County21 objects