The Canadian Pacific was the only North American railroad to regularly use the 2-10-4 in passenger service. The T1b subclass of "Selkirks"came from Montreal Locomotive Works in 1938 with the semi-streamlined styling of the CPR's famous Royal Hudsons. They had 25x32-inch cylinders, 285 p.s.i. of boiler pressure, and 63-inch drivers. With a locomotive weight of 435,000 pounds, they put out 76,900 pounds of tractive effort. (For other dimensions see the page for No. 5931 following.) This CPR publicity photo of No. 5921 was contributed by Noel Giffin from the collection of his father Kenneth Levi Giffin.