Collection place
- Southern California104 objects
- Siskiyou County, California99 objects
- Lake County, California96 objects
- Mariposa County, California90 objects
- Northern Sierras, Northern California89 objects
- Northeastern United States85 objects
- Solano County, California82 objects
- West Virginia81 objects
- Wood County, West Virginia81 objects
- Fresno County, California78 objects
- Shasta County, California75 objects
- CA-Fre-115, Fresno County, California70 objects
- CA-Mrn-266, Tomales Point, Point Reyes62 objects
- Tomales Point, Point Reyes, Marin County62 objects
- Surprise Valley, Modoc County, California61 objects
- Lindsey Slough, Solano County, California60 objects
- Pershing County, Nevada57 objects
- Santa Barbara County, California54 objects
- Sonoma County, California53 objects
- Churchill County, Nevada51 objects