Collection place
- Butte County, California21 objects
- Big Chico Creek watershed, Butte County, California19 objects
- Chico, Butte County, California19 objects
- Southern Great Lakes states, United States19 objects
- Great Lakes, United States16 objects
- Western Alaska16 objects
- Alturas, Modoc County, California15 objects
- New Mexico15 objects
- Tanana River, Yukon-Koyukuk Census Area, Alaska15 objects
- Klamath River area, Northwestern California, California14 objects
- Klamath River, Humboldt County, California14 objects
- McAlester, Pittsburg, Oklahoma14 objects
- Northern Great Lakes, United States14 objects
- Northwestern New Mexico14 objects
- Norton Sound to Bristol Bay, Alaska14 objects
- Oklahoma14 objects
- Pittsburg, Oklahoma14 objects
- Southern central United States14 objects
- Western New Mexico14 objects
- South Central California12 objects