“How 12 convicts escaped by tunnel from Eastern Penitentiary,” Diagram of the Tunnel published in the Philadelphia Inquirer, April 3, 1945 (image: Philadelphia Inquirer via Easter State Penitentiary) Eastern State Penitentiary opened its gates in 1829. It was devised by The Philadelphia Society for Alleviating the Miseries of Public Prisons, an organization of powerful Philadelphia […]