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Names
- Bentley Historical Library17
- Michigan Environmental Council.3
- Ecology Center of Ann Arbor.2
- Engler, John, 1948-2
- Friends of the Jordan River Watershed.2
- Granholm, Jennifer.2
- Michigan Natural Areas Council.2
- Michigan Nature Association.2
- Michigan United Conservation Clubs.2
- Michigan. Dept. of Natural Resources.2
- Sierra Club. Michigan Chapter.2
- West Michigan Environmental Action Council.2
- Animas-La Plata Project.1
- Ann Arbor Tomorrow Council.1
- Baxter, Dow Vawter, 1898-1965.1
- Bentley Historical Library (collector)1
- Bike-a-thon (Ann Arbor, Mich.)1
- Citizens Association for Area Planning.1
- Citizens for Alternatives to Chemical Contamination.1
- Cobbs & Mitchell.1