Robert M. Utley is a retired Chief Historian of the National Park Service and has written over fifteen books on a variety of aspects of history of the American West. His writings have received numerous prizes, including the National Cowboy and Western Heritage Museum's Wrangler Award, the Western Writers of America Spur Award, the Caughey Book Prize from the Western History Association, and the Samuel Eliot Morison Prize from the Society for Military History. He resides in Georgetown, Texas.
Howard R. Lamar is Sterling Professor Emeritus of History at Yale and a former president of that university.
David J. Weber is The Robert and Nancy Dedman Professor of History and the Director of the Clements Center for Southwest Studies at Southern Methodist University.
Martin Ridge is a senior research associate in the Henry E. Huntington Library. He has taught at San Diego State University, Indiana University, and the California Institute of Technology. He is the former editor of the Journal of American History and the past president of the Pacific Coast Branch of the American Historical Association and Western History Association. He is the author of numerous scholarly and review articles dealing with the American West. He is the coeditor of Histories of the American Frontier.