Buffalo Bill's America: William Cody and the Wild West Show (Alfred A. Knopf, 2005) Winner: Albert J. Beveridge Award of the American Historical Association Caughey Western History Association Prize Great Plains Distinguished Book Prize Western Writer's of America Spur Award

American Environmental History (Malden, MA: Blackwell, 2003) (editor)

"Buffalo Bill Meets Dracula: William Cody, Bram Stoker, and the Frontiers of Racial Decay," American Historical Review vol. 107, no. 4 (October 2002): 1124-1157

The Hunter's Game: Poachers and Conservationists in Twentieth Century America (Yale University Press, 1997) (Outstanding Non-Fiction Book of 1997, National Cowboy Hall of Fame and Western Heritage Center)

"The Nature of Conquest: Indians, Americans, and Environmental History," in Philip J. Deloria and Neal Salisbury, eds., Companion to American Indian History (Malden, MA: Blackwell, 2002) 287 - 306.