http://tags.library.upenn.edu/tag/biography+butch_cassidy PennTags Feed http://tags.library.upenn.edu/makerecord/voyager/1562 http://tags.library.upenn.edu/makerecord/voyager/1562 Pulished in 1998, a biography of Butch Cassidy's life that focuses around the ambiguity of his death.<br />