John H. Burde is a professor of forestry at Southern Illinois University and an expert on U.S. national parks. George A. Feldhamer is the chair of environmental studies and a professor of zoology at Southern Illinois University. He is the author of the lauded text, Mammalogy: Adaptation, Diversity, and Ecology and recently served as editor of the encyclopedic work, Wild Mammals of North America, also available from Johns Hopkins.