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Names
- Bentley Historical Library16
- Michigan Environmental Council.3
- Michigan Land Use Institute.3
- West Michigan Environmental Action Council.3
- Bentley Historical Library (collector)2
- Engler, John, 1948-2
- Michigan Natural Areas Council.2
- Michigan Nature Association.2
- Michigan United Conservation Clubs.2
- Michigan. Dept. of Natural Resources.2
- Michigan. Legislature. Senate.2
- Pollack, Lana, 1942-2
- Sierra Club. Michigan Chapter.2
- University of Michigan -- Faculty.2
- Albert Kahn Associates.1
- American Arab Chamber of Commerce.1
- Animas-La Plata Project.1
- Ann Arbor (Mich.). Board of Education.1
- Ann Arbor (Mich.). Housing Commission.1
- Ann Arbor SPARK.1