Collection place
- Alameda County, California13 objects
- Monterey County, California13 objects
- Northwestern United States12 objects
- Berkeley, Alameda County, California11 objects
- CA-Ala-307, Berkeley, Alameda County11 objects
- Northwestern California11 objects
- San Joaquin County, California11 objects
- West Berkeley, Berkeley, Alameda County11 objects
- Multnomah County, Oregon10 objects
- Oregon10 objects
- Sauvie Island, Multnomah County, Oregon10 objects
- Solano County, California10 objects
- Southwestern United States10 objects
- Western Oregon10 objects
- Marin County, California9 objects
- Northeastern California9 objects
- Humboldt County, Nevada8 objects
- Oceania8 objects
- Arizona7 objects
- CA-Mnt-18, Carmel, Monterey County7 objects