Collection place
- Contra Costa County, California3 objects
- Siskiyou County, California3 objects
- Southeastern United States3 objects
- CA-Hum-200, Humboldt County, California2 objects
- CA-SBa-1, Santa Barbara County, California2 objects
- CA-SRI-4, Santa Rosa Island, Channel Islands2 objects
- CA-Sis-7, Lava fields, Siskiyou County2 objects
- Canby's Cross, Lava fields, Siskiyou County2 objects
- Central California2 objects
- Central Washington2 objects
- Eastern California2 objects
- El Dorado County, California2 objects
- Klickitat County, Central Washington2 objects
- Lassen County, California2 objects
- Lava fields, Siskiyou County, California2 objects
- Luna County, New Mexico2 objects
- Mendocino County, California2 objects
- Modoc County, California2 objects
- Mono County, California2 objects
- Navajo County, Arizona2 objects