- California20 objects
- North America20 objects
- Northern California20 objects
- The Americas20 objects
- United States20 objects
- CA-Sis-262 (Foster site), Bogus Creek, Siskiyou County19 objects
- Northeastern California19 objects
- Siskiyou County, California19 objects
- CA-Hum-169 (Tsurai), Humboldt County, California1 objects
- Humboldt County coast, Humboldt County, California1 objects
- Humboldt County, California1 objects
- Northwestern California1 objects
- Trinidad Bay, Humboldt County, California1 objects
- Trinidad, Humboldt County, California1 objects