N&W Y6a 2160 and class A 1219 are nose-to-nose rolling downgrade at Blue Ridge with an empty hopper train. I had also seen this unusual helper arrangement that August on one occasion. There were a lot of drivers and side rods turning.
Either a freight train being helped over a steep grade or a long passenger or freight train requiring more engines. This album includes Helpers and double heading trains of the old days both steam and diesel.