Collection place
- Northeastern California29 objects
- CA-SJo-68, San Joaquin County, California23 objects
- CA-SRI-60, Santa Rosa Island, Channel Islands23 objects
- Northern Sierras, Northern California22 objects
- CA-Cal-99 (Winslow Cave), Calaveras County, California21 objects
- Calaveras County, California21 objects
- CA-Sac-19, Sacramento County, California19 objects
- CA-CCo-141, Palm Tract, Contra Costa County17 objects
- Palm Tract, Contra Costa County, California17 objects
- Unincorporated eastern Contra Costa County, California17 objects
- Northwestern California16 objects
- CA-Col-3 (Sandhill site), Colusa County, California14 objects
- Colusa County, California14 objects
- Marin County, California11 objects
- Alameda County, California7 objects
- Berkeley, Alameda County, California7 objects
- CA-Ala-307, Berkeley, Alameda County7 objects
- CA-CCo-259, Rodeo, Contra Costa County7 objects
- McCloud River, Shasta County, California7 objects
- Rodeo, Contra Costa County, California7 objects