5.4. c.f. (14 archives boxes and 2 oversize folders).
1 scrapbook (1 flat box and 4 folders).
2 tape recordings, and.
1 compact disc.
Papers, 1930-2008 (mainly 1960-1996), of Lorrie Otto (Mary Lorraine Otto), conservationist, teacher-naturalist, and natural landscaping advocate, documenting her involvement in hearings before the Wisconsin Conservation Dept. (now the Wisconsin Dept. of Natural Resources) that led to the 1970 statewide ban of the pesticide known as DDT, and her continued efforts to preserve and advocate for the natural environment. Materials document Otto's research and collaboration with colleagues and conservation organizations prior to, during, and after the Wisconsin DDT hearings. Also documented is her work and activities associated with promoting natural landscaping and her involvement in conservation groups such as Citizens Natural Resources Association (CNRA), The Nature Conservancy, and Wild Ones. Frequent or noteworthy correspondents include Senator Gaylord Nelson, Environmental Defense Fund scientist Charles F. Wurster, and Wisconsin Dept. of Natural Resources conservationist Walter Edwin Scott.