Photographer- my Father- Guy Lisowski.
A pair of RF&P GP40-2s pull a TOFC consist northbound past what was a great train watching location for many years; RF&P "Potomac Yard," affectionately referred to as "Pot Yard." I spent a lot of time in my youth watching trains in the Alexandria area. The map location shows where the image was taken, this is the original alignment of the main.
