| D-Prints. Here is a print by an unidentified photographer that was taken near Lewistown, Pennsylvania, on 11 June 1956. Shown here is Pennsylvania Railroad engines #5890, an EP-22 built in April of 1950 and rated at 2,250 horsepower each. In this one-of-a-kind context, it's pulling the PRR's brand-new eight-car "Tubular Train" ~ later known as "The Keystone." Brad Mann Collection. |