Swarthmore, PA, United States
J. Edgar Thomson. Here was born the first chief engineer, Pennsylvania Railroad, 1847-52, and its third president, 1852-74. He was responsible for construction of the main line, Harrisburg to Pittsburgh, and for the system's expansion to the Mississippi River.
Listen to the audio guide for Blue plaque № 28854 Free on WIP — starts by itself when you arrive, even with the screen off