Founded in 1846 with headquarters in Philadelphia, the Pennsylvania Railroad Company (PRR) was an American Class-1 Railroad that pervaded early American culture. As a chief source of employment and transportation, the PRR served as a national symbol of America's progress as a leading industrial nation. This item is a poster featuring an E6s Atlantic class locomotive on the turntable at the Pennsylvania Railroad's 46th Street Enginehouse in West Philadelphia. The poster was created to celebrate 150th anniversary of the Pennsylvania Railroad's charter.