|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: Richard R. Wallin Collection." #5849 is an EP-20 built by GM-EMD in August of 1947 and rated at 2,000 horsepower. Unfortunately, the numbers of the on-coming GM-EMD F-3 freight diesels are not recorded.