- North America335 objects
- The Americas335 objects
- United States✖Remove constraint Collection place: United States335 objects
- California333 objects
- Northern California290 objects
- Northwestern California259 objects
- Humboldt County, California228 objects
- CA-Hum-112, Humboldt County, California187 objects
- Humboldt Bay, Humboldt County, California187 objects
- South Spit, Humboldt Bay, Humboldt County187 objects
- Blocksburg, Humboldt County, California41 objects
- North Central California30 objects
- Trinity County, California25 objects
- CA-Tri-58, Trinity County, California24 objects
- Trinity Lake, Trinity County, California24 objects
- Central California20 objects
- Kern County, California20 objects
- South Central California20 objects
- CA-Ker-74 (Shirer Ranch site), Kern County, California19 objects
- Lake County, California18 objects