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Creator
- Bentley Historical Library (collector)1
- Citizens for Alternatives to Chemical Contamination.1
- Ecology Center of Ann Arbor.1
- Engler, John, 1948-1
- Friends of the Jordan River Watershed.1
- Granholm, Jennifer.1
- Michigan Botanical Club.1
- Michigan Environmental Council.1
- Michigan Natural Areas Council.1
- Michigan Nature Association.1
- Michigan United Conservation Clubs.1
- Sax, Joseph L.1
- Sharkey, Reginald, 1913-20051
- Sheppard, Glen, 1936-1
- Sierra Club. Michigan Chapter.1
- University of Michigan. School for Environment and Sustainability.1
- West Michigan Environmental Action Council.1