They were the dominant freight locomotive on the system until World War II and remained in service until 1957.

[5] In 1963, the engine was purchased by the Westinghouse Air Brake Company to display on the front lawn of their headquarters in Wilmerding, Pennsylvania.

[3][6] The company had sought a railroad-themed display for its headquarters to commemorate its heritage of supplying air brakes to America's railroads.

The locomotive saw little maintenance during this period and its condition deteriorated significantly, although the boiler's asbestos cladding was removed.

[7] Currently, the organization hopes to move the locomotive to the Heritage Discovery Center in Buffalo, New York to sit on public display.