JOHN BOESSENECKER, a San Francisco trial lawyer and former police officer, is considered one of the leading authorities on crime and law enforcement in the Old West. He is the award-winning author of Bandido: The Life and Times of Tiburcio Vasquez. 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 other networks.