Federal Railroad Administration (Hrsg.): History of Running Times / Passenger Trains Northeast Corridor. 28. Oktober 1984, S.6 (dot.gov): „Until September 21, 1970, regular trains to and from Boston used either Grand Central Terminal or Pennsylvania Station in New York. Generally speaking, trains originating or terminating in New York used Grand Central Terminal, while trains to and from points south of New York such as Philadelphia and Washington used Pennsylvania Station. Effective September 21, 1970, all regular trains to and from Boston have been using Pennsylvania Station only.“
