For a brief period at the end of the 1970's, the Massachusetts Bay Transportation Authority made use of four leased Delaware & Hudson PA-type Alco diesels in commuter service. Here, D&H 16 is in charge of a Worcester-bound afternoon train as it passed through Riverside, MA late in the afternoon.
The Alco PA was often regarded as one of the handsomest diesel locomotives every constructed, but suspect their relative rarity may have had something to do with it, as the far more numerous EMD E-units also didn't take a back seat in the appearance department.
The MBTA always has had a fondness for second-hand power, a trend that continues to this day, sometimes to the detriment of schedule reliability.
Delaware HudsonFuture TPOTDMBTA