- California13 objects
- North America13 objects
- The Americas13 objects
- United States13 objects
- Northern California12 objects
- Northwestern California11 objects
- Humboldt County, California2 objects
- Klamath River below Weitchpec, Humboldt County, California2 objects
- Klamath River, Humboldt County, California2 objects
- Melanesia2 objects
- New Guinea, Melanesia2 objects
- Oceania2 objects
- Papua New Guinea2 objects
- Deer Creek, Tehama County, California1 objects
- Haupt Ranch, Sonoma County, California1 objects
- North Central California1 objects
- San Francisco Bay Area, California1 objects
- Sonoma County, California1 objects
- Tehama County, California1 objects