Grand Trunk Western 6325 is a class "U-3-b" 4-8-4 "Northern" type steam locomotive built in 1942 by the American Locomotive Company (ALCO) for the Grand Trunk Western Railroad. As a member of the dual service U-3-b class, the 6325 handled heavy passenger and freight work for the Grand Trunk Western. In 1946, the 6325 gained notoriety for pulling United States President Harry S. Truman's election campaign train through the state of Michigan. Retired in 1959, the locomotive was donated for display to the City of Battle Creek, Michigan where a failed restoration attempt left 6325 in danger of being scrapped. Purchased in 1993 by Jerry Jacobson of the Ohio Central Railroad, the locomotive sat in storage for six years until being restored to operating condition on July 31, 2001, for use on excursion trains across the Ohio Central System. The locomotive is in storage, on static display at the Age of Steam Roundhouse in Sugarcreek, Ohio.

The Grand Trunk Western Railroad Company was an American subsidiary of the Grand Trunk Railway, later of the Canadian National Railway operating in Michigan, Illinois, Indiana, and Ohio. Since a corporate restructuring in 1971, the railroad has been under CN's subsidiary holding company, the Grand Trunk Corporation. Grand Trunk Western's routes are part of CN's Michigan Division. Its primary mainline between Chicago and Port Huron, Michigan serves as a connection between railroad interchanges in Chicago and rail lines in eastern Canada and the Northeastern United States. The railroad's extensive trackage in Detroit and across southern Michigan has made it an essential link for the automotive industry as a hauler of parts and automobiles from manufacturing plants.