15 : Predecessors of the Chicago and North Western Transportation Company|Railway companies established in 1859|Railway companies disestablished in 1972|Former Class I railroads in the United States|Defunct Missouri railroads|Defunct Illinois railroads|Defunct Nebraska railroads|Defunct South Dakota railroads|Defunct Wyoming railroads|Defunct Minnesota railroads|Defunct Kansas railroads|Defunct Wisconsin railroads|Defunct Iowa railroads|Defunct North Dakota railroads|Defunct Michigan railroads