The Grand Trunk Western's U-1-c Mountains, Nos. 6037-6041, had 26x30-inch cylinders, a driver diameter of 73 inches, and a boiler pressure of 210 pounds per square inch. Boasting a locomotive weight of 354,110 pounds, they produced 49,590 pounds of tractive force. With a grate area of 67 square feet, these engines had 4049 square feet of evaporative heating surface and a superheater surface of 1087 square feet. Notice that the eccentric crank on the main driver is angled toward the rear. This arrangement, sometimes called the "reversed" or "indirect" type, requires the radius rod (connecting to the combination lever and valve stem) to be in the upper position in the Walschaert valve gear link for forward motion. This uncommon arrangement seems to be characteristic of all CNR and GTW U-1-a through U-1-c class Mountains until the U-1-d class of 1929. After being supplanted on the Chicago-Port Huron main line, these handsome engines spent their later years on the Detroit-Muskegon line and ended their careers in suburban service between Detroit and Durand, Michigan. In this view of unknown provenance supplied by Tom Rock of T.D.R. Productions we see No. 6041, the final member of the U-1-c class, resting at a roundhouse.