- California22 objects
- North America22 objects
- The Americas22 objects
- United States22 objects
- Northeastern California21 objects
- Northern California21 objects
- CA-Sis-262 (Foster site), Bogus Creek, Siskiyou County19 objects
- Siskiyou County, California19 objects
- CA-Las-1, Lassen County, California2 objects
- Honey Lake Valley, Lassen County, California2 objects
- Lassen County, California2 objects
- CA-SFr-1, Farallon Islands, San Francisco County1 objects
- Farallon Islands, San Francisco County, California1 objects
- San Francisco Bay Area, California1 objects
- San Francisco County, California1 objects