Robert M. Utley is a writer and historian of the American West who served as the chief historian of the National Park Service. Utley has written over a dozen books on the West, including the classic American Heritage History of the Indian Wars.
Utley also authored Billy the Kid: A Short and Violent Life and Lone Star Justice: The First Century of the Texas Rangers. In 2004 University of Oklahoma Press released his memoirs, titled Custer and Me: A Historian's Memoir.