Nickel Plate (New York, Chicago & St. Louis) 2-8-4 No. 744 and a companion are ready for duty on an eastbound freight from Chicago's Calumet Yard, in this June 6, 1958 view by David Leonard. These Berkshires belonged to the NKP's S-2 class, which rolled off the erecting floor of Lima Locomotive Works in 1944. With 69-inch drivers, they had cylinder dimensions of 25x34 inches and carried a boiler pressure of 245 p.s.i. The locomotives alone weighed 440,800 pounds, and they developed 64,135 pounds of tractive effort.