|Here is a postal card entitled "Pennsylvania 5849." No Postmark. Caption On Reverse: "A passenger train, with E-7 5849 up front, heads west after crossing the Rockville Bridge into Marysville, Pa. A freight is ready to cross the stone arch bridge and continue east. Enola, location of the large Pennsy yard, is a short distance to the right of the photo. October 20, 1957." Photo by Fred Kern. Pennsylvania Railroad engine #5849 is an EP-20 built by GM-EMD in August of 1947 and rated at 2,000 horsepower. The eastbound freight train is headed by PRR engine #9662, an EF-15A built by GM-EMD in February of 1950 and rated at 1,500 horsepower.