the Detroit and Toledo Shore Line Railroad, (AAR reporting mark DTSL) was a small rail carrier that had a multi-track mainline bridging Detroit and Toledo and served major industries. Grand Trunk Western, GTW and the Nickel Plate Railroad, NKP co-owned the railroad. GTW eventually took complete control of the line when the Norfolk and Western Railway sold its share of the line after it merged with the Nickel Plate Road. Aar (disambiguation). ... Grand Trunk Western Railroad logo or herald (used 1960-1995) CNs principal U.S. subsidiary The Grand Trunk Western Railroad (GTWR, GT post-1960, AAR reporting mark GTW) is a U.S. railroad and primary subsidiary of Canadian National Railway (CN). ... The New York, Chicago and St. ... Norfolk and Western Railway (AAR reporting mark: NW), a US class 1 railroad, was formed by more than 200 railroad mergers between 1838 and 1982. ...