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Collection place
- North America388
- The Americas388
- United States385
- California370
- Northern California368
- Northwestern California303
- Humboldt County, California123
- Klamath River, Humboldt County, California71
- Northeastern California54
- Shasta County, California38
- Klamath River below Weitchpec, Humboldt County, California33
- Weitchpec, Humboldt County, California32
- near Weitchpec, Klamath River, Humboldt County32
- Del Norte County, California30
- Elk Valley, Del Norte County, California26
- Mouth of Salmon River, Del Norte County, California22
- Mad River, Humboldt County, California21
- Maple Creek, Mad River, Humboldt County21
- Baird (historic place), Shasta County, California19
- McCloud River, Shasta County, California19