Collection place
- Mad River, Humboldt County, California19 objects
- Maple Creek, Mad River, Humboldt County13 objects
- Blocksburg, Humboldt County, California11 objects
- CA-Hum-170, Humboldt County, California11 objects
- Klamath (CDP), Del Norte County, California11 objects
- Klamath River valley, Del Norte County, California11 objects
- Lower Klamath River, Humboldt County, California11 objects
- Requa, Klamath (CDP), Del Norte County11 objects
- Wright Camp, Round Valley, Mendocino County10 objects
- Ukiah Valley, Mendocino County, California9 objects
- Elk Valley, Del Norte County, California7 objects
- Humboldt lagoons, Humboldt County, California6 objects
- Klamath River area, Northwestern California, California6 objects
- Ukiah Rancheria, Ukiah Valley, Mendocino County6 objects
- Wakhtek, Humboldt County, California6 objects
- 16-18 miles above Blue Lake, Mad River, Humboldt County5 objects
- CA-Hum-120 (Tsótkswi), Humboldt County, California5 objects
- Ko'tep, Humboldt County, California5 objects
- Martin's Ferry, Humboldt County, California5 objects
- Bridgeville, Humboldt County, California4 objects