Butch Cassidy, a.k.a. Robert Leroy Parker, lived during a transitional period for America as westward expansion, industrialization, and corporate interests converged. At the twilight of the Old West sits Cassidy -- the subject of Charles Leerhsen’s new book -- whose perennial target, the Overland Limited operated by the Union Pacific Railroad, made for an ultimately fleeting assault on the march of progress. Leerhsen skillfully separates the fascinating facts of real life from the legend of the silver screen.   Inside the ICE House: https://www.theice.com/insights/conversations/inside-the-ice-house