The Chicago and Illinois Western Railroad (reporting mark CIW) was an industrial switching railroad serving the west side of Chicago and southwest Cook...

The Chicago and North Western (reporting mark CNW) was a Class I railroad in the Midwestern United States. It was also known as the "North Western". The...

subsidiaries Chicago Central and Pacific Railroad (CC), Elgin, Joliet and Eastern Railway (EJE), Grand Trunk Western Railroad (GTW), Illinois Central Railroad (IC)...

The Chicago Great Western Railway (reporting mark CGW) was a Class I railroad that linked Chicago, Minneapolis, Omaha, and Kansas City. It was founded...

The Chicago and Eastern Illinois Railroad (reporting mark CEI) was a Class I railroad that linked Chicago to southern Illinois, St. Louis, and Evansville...

The Illinois Central Railroad (reporting mark IC), sometimes called the Main Line of Mid-America, was a railroad in the Central United States. Its primary...

Galena and Chicago Union Railroad (G&CU) was the first railroad constructed out of Chicago, intended to provide a shipping route between Chicago and the...

Ohio, Indiana, Illinois, Iowa, Michigan, and Missouri and the province of Ontario. Its primary connections included Chicago, Illinois; Kansas City, Missouri;...

The Chicago and Western Indiana Railroad (reporting mark CWI) was the owner of Dearborn Station in Chicago and the trackage leading to it. It was owned...

The Illinois Railway Museum (IRM, reporting mark IRMX) is the largest railroad museum in the United States. It is located in the Chicago metropolitan area...