Collection place
- Estero de Limantour, Drakes Bay, Marin County127 objects
- Northwestern United States123 objects
- Middle Napa Valley, Napa County, California120 objects
- Churchill County, Nevada119 objects
- Oakley, Contra Costa County, California116 objects
- CA-CCo-138, Oakley, Contra Costa County113 objects
- South Central California113 objects
- CA-Mrn-266, Tomales Point, Point Reyes107 objects
- Tomales Point, Point Reyes, Marin County107 objects
- Northwestern California98 objects
- Unincorporated western Contra Costa County, California97 objects
- Berryessa Valley, Napa County, California93 objects
- CA-Sac-16 (Bennet Mound), Sacramento County, California90 objects
- Alaska89 objects
- Yolo County, California88 objects
- CA-Col-2 (Howell's Point), Colusa County, California87 objects
- CA-Nap-93, Berryessa Valley, Napa County83 objects
- Four Corners Region, Southwestern United States83 objects
- South America75 objects
- CA-Sac-127 (Augustine site), Sacramento County, California74 objects