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Names
- Bentley Historical Library4
- Michigan Audubon Society.2
- Allen, Shirley Walter, 1883-1
- Arnold, Keith.1
- Bartlett, Ilo H.1
- Bear, Fred.1
- Bentley Historical Library (collector)1
- Civilian Conservation Corps (U.S.)1
- Clark, Horace.1
- Dana, Samuel Trask, 1883-1978.1
- Earle, G. Harold.1
- East Michigan Environmental Action Council.1
- East, Ben.1
- Ecology Center of Ann Arbor.1
- Engler, John, 1948-1
- Environmental Fund (U.S.)1
- Federation for American Immigration Reform.1
- Friends of the Jordan River Watershed.1
- Gillette, Genevieve, 1898-1
- Glassen, Harold W., 1906-1