GG1 on the Main Line By Angela Cotey | December 19, 2020 | Last updated on February 5, 2021 Email Newsletter Get the newest photos, videos, stories, and more from Trains.com brands. Sign-up for email today! Get Updates A Pennsylvania Railroad GG1 thunders through Haverford, 9 miles west of Philadelphia on the Main Line, with the Admiral from Chicago in 1966. Photo by Paul J. McGonigal