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Names
- Bentley Historical Library3
- Michigan Natural Areas Council.[remove]3
- Environmental Fund (U.S.)2
- Federation for American Immigration Reform.2
- Michigan. Wilderness and Natural Areas Advisory Board.2
- Northern Michigan Planned Parenthood.2
- Pictured Rocks National Lakeshore Advisory Commission.2
- Zero Population Growth, Inc.2
- Alliance for American Rights and Responsibilities.1
- Bentley Historical Library (collector)1
- East Michigan Environmental Action Council.1
- Ecology Center of Ann Arbor.1
- Friends of the Jordan River Watershed.1
- Graham, Otis L.1
- Huron River Watershed Council.1
- Little Traverse Conservancy.1
- Michigan Audubon Society.1
- Michigan Environmental Council.1
- Michigan Garden Clubs.1
- Michigan Land Use Institute.1