. . . . . . "Pennsylvania \u2013 New Jersey Railway" . . . . . . . . . "1968" . . . . "Pennsylvania Railroad Co." . . . . . . . . . . . . . . . . . . . . . "Penn Central" . . . . . . "Ohio & Pennsylvania Railroad" . "Pennsylvania Railroad's" . . . . . . . . "Pennsylvania [Railroad]" . . . . . . . . . . . . . . . . . . "Pennsy" . "Pennsylvania Railroad Station" . "Delaware Railroad" . . . "1846-04-13" . "Pennsylvania Railroad Company" . "Pennsylvania Central Railroad" . . . . . . . "PRR-Style compound catenary system" . . . "electrification project" . . . . . . . . . . . . . . . "1846" . . "Pennsylvania and New York Railroad" . . "Pennsylvania Rail" . . . "Pennsylvania Railroad's low-grade lines" . . . . . "The Pennsylvania Railroad Company" . . . . . . . . . . . . . . . "Philadelphia, Baltimore & Washington Railroad" . . . . "Pennsylvania Lines" . . . . . . . . . . . . . . . . . . . . . . . . . . . "Pennsylvania Railroad (PRR)" . . . . . . . . . "Penn Jersey Rail Lines" . . "electrify its main line" . . . . . . . . . . . . . "1846" . . . . . . . . "Pennsylvania Railroad system" . . . . "12500.0" . . . . . . . . . . . . . . . . "Pennsylvania and Ohio Electric Railway" . . . "the Pennsylvania Railroad" . . . . . . "PRR's" . . "railroads" . . . . . . . "1968 merger" . . . . . . . . . . . "Pennsylvania and Mahoning Valley Railway" . . "Pennsylvania RR" . . . . . . . . ";Pennsylvania Railroad" . . . . . . . . . . "Pennsylvania Railroad" . . . . . . . . . "PRR" . . . "Pennsylvania Railroad" . . . "railways" . . "Pennsylvania Railroad Corporation" . . . . . . "1.873382632704E7" . . . . "keystone" . . . "Pennsylvania Railroad" . . . . . . "Pennsylvania Rail Road Company" . . . "electrification" . "Trenton Cutoff" . . . . . . . . . . "electrification program" . . . . . . "position-light signal" . . . "1968-01-31" . . . . . . . . . . . . . . . . . . . . . . . . . . "Pennsylvania and Newark Railroad" . . . . . . . "PRR" . . . . . . . . . . . . . . . . . . . . . . . . "Pennsylvania" . . . "Pennsylvania R.R. Co." . "Fort Wayne shop" . . . . . . . . . . .