Susan Flader is professor emerita of American western and environmental history at the University of Missouri-Columbia. She has written extensively about Aldo Leopold and served as board chair of the Leopold Foundation. In addition to numerous articles, she has authored or edited ten books, among them Thinking Like a Mountain: Aldo Leopold and the Evolution of an Ecological Attitude, The Great Lakes Forest, The River of the Mother of God and Other Essays by Aldo Leopold, Towards Sustainability for Missouri Forests, and Missouri State Parks and Historic Sites. She is a founder and past president of the American Society for Environmental History and the Missouri Parks Association. She is also the current president of the L-A-D Foundation, which owns the 143,000-acre, sustainably managed Pioneer Forest and a dozen natural areas and parks in the Missouri Ozarks. She has lectured in nearly every state and on five continents, most frequently in China, served on many professional and environmental boards and committees, and won numerous national and state awards for publications and conservation.