T.J. Stiles is an independent biographer and historian living in Berkeley, California. He received the National Book Award and Pulitzer Prize for The First Tycoon: The Epic Life of Cornelius Vanderbilt, and the Ambassador Book Award and Peter Seaborg Award for Civil War Scholarship for Jesse James: Last Rebel of the Civil War. He is a past Guggenheim Fellow, Gilder Lehrman Fellow at the New York Public Library's Center for Scholars and Writers, and faculty member for the World Economic Forum, and is a current member of the Society of American Historians.

His website is http://tjstiles.net.