Collection place
- NV-Ch-65, Carson Sink, Churchill County, Nevada37 objects
- Copic Island, Lower Klamath Lake, Siskiyou County32 objects
- Glaser Lakes, Lower Klamath Lake, Siskiyou County32 objects
- Mineral County, Nevada32 objects
- NV-Mi-5 (Demchak Site), Mineral County, Nevada32 objects
- San Francisco Bay Area, California32 objects
- Northeast Lower Klamath Lake, Siskiyou County, California30 objects
- NV-Ch-67 (Dune Springs), Churchill County, Nevada29 objects
- NV-Ch-61, Churchill County, Nevada26 objects
- NV-Ch-108, Churchill County, Nevada25 objects
- Southern Lower Klamath Lake, Siskiyou County, California23 objects
- Sonoma County, California22 objects
- NV-Ch-39 (Pelican Island), Churchill County, Nevada21 objects
- NV-Wa-42, Washoe County, Nevada21 objects
- CA-Son-367, Sonoma County, California20 objects
- near Occidental, Sonoma County, California20 objects
- NV-Ch-66, Churchill County, Nevada18 objects
- Nye County, Nevada17 objects
- CA-Sis-240, Lower Klamath Lake, Siskiyou County16 objects
- CA-Sis-256, Lower Klamath Lake, Siskiyou County16 objects