William T. Phillips

Who was William T. Phillips?

William T. Phillips was a Spokane, Washington author, best remembered for The Bandit Invincible, a biography of the outlaw Butch Cassidy. A copy of the book is held at The American Heritage Center at the University of Wyoming. Phillips claimed to have known Cassidy since childhood, and states in his book that Butch Cassidy's real name was not Robert Parker. Some have speculated that Phillips was Butch Cassidy but there is no evidence to support the claim.