Though New Jersey Transit lists the stop as the “Princeton Station,” locals refer to their train as the “Dinky” or “PJ&B” (Princeton Junction & Back). Recently, the station moved several hundred feet from its former site near University Place along Alexander Road, making it the talk of the town. Protests of a planned replacement of the little train with a bus spared this bit of Princeton history, which most of our readers are likely to remember. As it happens, the “Save the Dinky” movement echoes a nineteenth-century protest that both saved the train and created its route. Aside from a short-lived Boston & Albany route that ran 1.2 miles in the early 1950s, Riverside to Newton Lower Falls (Massachusetts), this has always been—and remains—the shortest passenger train route in the United States. Here we take a look at how Princeton got its tiny train and kept it running.