Paul Andrew Hutton is Distinguished Professor of History at the University of New Mexico and author of Soldiers West: Biographies from the Military Frontier and numerous other books and articles.
Robert M. Utley (1929–2022) served in the National Park Service for 25 years in various capacities, including Chief Historian from 1964 to 1972. Since his retirement from the federal government in 1980, he has devoted himself full-time to historical research and writing with a specialty in the American West. He is author, among many articles and books he has published, of Cavalier in Buckskin: George Armstrong Custer and the Western Military Frontier, Revised Edition; Billy the Kid: A Short and Violent Life; Lone Star Lawmen: The Second Century of the Texas Rangers; and The Commanders: Civil War Generals Who Shaped the American West. A founder of the Western History Association, Utley has served on its governing council and as its president.
