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Names
- Bentley Historical Library2
- West Michigan Environmental Action Council.2
- Bentley Historical Library (collector)1
- Conner, Roger L.1
- East Michigan Environmental Action Council.1
- Ecology Center of Ann Arbor.1
- Environmental Fund (U.S.)1
- Federation for American Immigration Reform.1
- Friends of the Jordan River Watershed.1
- Hood, Rachel.1
- Huron River Watershed Council.1
- Leonard, Thomas.1
- Little Traverse Conservancy.1
- Michigan Audubon Society.1
- Michigan Environmental Council.1
- Michigan Garden Clubs.1
- Michigan Land Use Institute.1
- Michigan Natural Areas Council.1
- Michigan Nature Association.1
- Michigan United Conservation Clubs.1