Fotografia scattata al Wyoming membro Penitenzieria, Laramie, Wyoming e montato su una scheda da Pinkerton nazionale dell'agenzia detective con informazioni su Parker, dando il suo alias come George Cassady e "Butch' Cassady, 1893. Robert Leroy Parker (Apri
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Photograph taken at the Wyoming State Penitentiary, Laramie, Wyoming, and mounted on a card from Pinkerton's National Detective Agency with information about Parker, giving his aliases as George Cassady and "Butch" Cassady, 1893. Robert Leroy Parker (April 13, 1866 - November 7, 1908), better known as Butch Cassidy, was a notorious American train robber, bank robber, and leader of the Wild Bunch gang in the American Old West. The Wild Bunch was one of the loosely organized outlaw gangs operating out of the Hole-in-the-Wall in Wyoming. The gang was led by Butch Cassidy, and it included his closest friend Elzy Lay, the Sundance Kid, Tall Texan, News Carver, Camila "Deaf Charlie" Hanks, Laura Bullion, Flat-Nose Curry, Kid Curry and Bob Meeks. They would become the most successful trainrobbing gang in history. Most who knew him described Butch Cassidy as an agreeable fellow with a sense of humor, generous with his associates, and quick to make friends with children. He also liked the ladies, and many apparently returned his affections. There is no documentation that he ever killed anyone. After pursuing a career in crime for several years in the United States, the pressures of being pursued, notably by the Pinkerton detective agency, forced him to flee with an accomplice, Harry Alonzo Longabaugh, known as the Sundance Kid, and Longabaugh's girlfriend, Etta Place. The trio fled first to Argentina and then to Bolivia, where Parker and Longabaugh were probably killed in a shootout in November 1908.