"Steam locomotives resisted the onset of dieseldom a bit longer in Canada than on most railroads south of the border, and this was also true for Canadian National Railways' operating unit in the Great Lakes states, the Grand Trunk Western. Until the mid-1950s the GTW's passenger service was still entirely steam-operated, with 4-8-4s, 4-8-2s and 4-6-2s and even a 2-8-0 in mixed train service on the Greenville branch."
"The GTW's class U-3-b 4-8-4s were built by American Locomotive Company in 1942-1943 for both freight and passenger service, and capably handled such trains as the Maple Leaf, the Inter-City Limited, and the International Limited in addition to main line freights. I photographed No. 6323 at Durand, Michigan, in May, 1954, while it was temporarily separated from the Maple Leaf so a diesel switcher (visible behind 6323's tender) could switch a car for the Detroit connection. With a locomotive weight of 403,000 pounds and a combined engine-and-tender length of 96 feet, this class was still one of the smaller types of 4-8-4s used on the North American railway system. These engines had 73-inch drivers, 26x30-inch cylinders, and a boiler pressure of 250 pounds per square inch, producing a tractive effort of 59,034 pounds. They ended their days in Detroit suburban passenger service, and can be seen in this role on the Herron video/DVD Glory Machines of the Grand Trunk Western. No. 6323 is said to be that last steam locomotive used in main line passenger service in the U.S., and made her last run under GTW ownership on September 20, 1961."
And here she is...