Before the advent of the famous Hudson type, Pacifics of the high-stepping K-3 class headed the premier trains of the New York Central's passenger fleet, including the Twentieth Century Limited, and were featured in this role on calendars issued by the railroad. (For one of these calendar paintings by Walter L. Greene, click here.) Earlier subclasses were built with the riveted trailing truck, and many members of those classes were retrofitted with the one-piece steel casting that served as as a bed for a booster engine, raising their tractive effort from 30,900 to 40,610 pounds. Some members of the K-3q class, however, apparently came from Alco's Brooks works in 1923 equipped with the booster, with a locomotive weight of 298,800 pounds. They had 3424 square feet of evaporative heating surface, 832 square feet of superheating surface, and a grate area of 57 square feet. For other specifications of the K-3 class consult the commentaries for Nos. 4707 and 4728. An unknown photographer captured this image of K-3q class 4-6-2 No. 4683 at Harmon, New York, in 1936 shortly after her renumbering from 3283; she was withdrawn from service and scrapped in 1952. Wayne Koch provided the image from his collection.