JOHN BOESSENECKER is considered one of the leading authorities on crime and lawlessness in the Old West. He is the award-winning author of Bandido: The Life and Times of Tiburcio Vasquez and When Law Was in the Holster: The Frontier Life of Bob Paul. In 2011 and 2013, True West magazine named Boessenecker Best Nonfiction Writer. He has appeared frequently as a historical commentator on PBS, The History Channel, A&E, and others. He lives in San Francisco, California.