Collection place
- Lone Pine (CDP), Inyo County, California55 objects
- Nigeria55 objects
- near Alturas, Modoc County, California55 objects
- Egypt54 objects
- Fresno County, California54 objects
- Mad River, Humboldt County, California51 objects
- Mariposa County, California50 objects
- Southeast Alaska50 objects
- Central Mexico49 objects
- Indonesia49 objects
- Ukiah, Ukiah Valley, Mendocino County49 objects
- Indochina46 objects
- Elk Valley, Del Norte County, California45 objects
- Klamath River below Weitchpec, Humboldt County, California44 objects
- Malaysia44 objects
- Northern Mexico42 objects
- Oaxaca, Mexico42 objects
- Sacramento County, California41 objects
- Nile River Valley, Egypt40 objects
- Puget Sound, Western Washington40 objects