- California1,717 objects
- North America1,717 objects
- Northeastern California1,717 objects
- Northern California✖Remove constraint Collection place: Northern California1,717 objects
- The Americas1,717 objects
- United States1,717 objects
- Siskiyou County, California1,605 objects
- CA-Sis-7, Lava fields, Siskiyou County1,008 objects
- Canby's Cross, Lava fields, Siskiyou County1,008 objects
- Lava fields, Siskiyou County, California1,008 objects
- Lower Klamath Lake Area, Siskiyou County, California582 objects
- Lower Klamath Lake, Siskiyou County, California582 objects
- Northeast Lower Klamath Lake, Siskiyou County, California337 objects
- CA-Sis-11, Lower Klamath Lake, Siskiyou County335 objects
- CA-Sis-10, Oklahoma Landing and Fleming Islands, Lower Klamath Lake245 objects
- Modoc County, California112 objects
- Tule Lake, Modoc County, California112 objects
- Scorpion Ridge, Tule Lake, Modoc County102 objects
- CA-Sis-6, Siskiyou County, California15 objects
- Glass Mountain, Siskiyou County, California15 objects