Andrew C. Isenberg is Professor of History at Temple University. He is the author of The Destruction of the Bison: An Environmental History, 1750-1920, Mining California: An Ecological History, and Wyatt Earp: A Vigilante Life, and the editor of The Nature of Cities: Culture, Landscape, and Urban Space. Contributors: Thomas Andrews, University of Colorado at Boulder . Emily Brock, University of South Carolina Kathleen A. Brosnan, University of OklahomaMark Carey, University of OregonConnie Y. Chiang, Bowdoin College Lawrence Culver, Utah State UniversityDiana K. Davis, University of California, DavisWilliam Deverell, University of Southern CaliforniaKurk Dorsey, University of New HampshireAndrew R. Graybill, Southern Methodist UniversityMarcus Hall, University of ZurichAndrew C. Isenberg, Temple UniversityMatthew Klingle, Bowdoin CollegeNancy Langston, Michigan Technological UniversityThomas Lekan, University of South CarolinaMichael Lewis, Salisbury UniversityLinda Nash, University of WashingtonSara B. Pritchard, Cornell UniversitySteven Stoll, Fordham UniversityPaul S. Sutter, University of Colorado at BoulderJames Morton Turner, Wellesley CollegeNancy C. Unger, Santa Clara UniversityBrett Walker, Montana State UniversityLouis Warren, University of California, DavisFrank Zelko, University of VermontThomas Zeller, University of Maryland, College Park