 | AT&SF Atchison, Topeka & Santa Fe |
 | B&O Baltimore & Ohio |
 | B&OCT Baltimore & Ohio Chicago Terminal |
 | BRC Belt Railway of Chicago |
 | C&A Chicago & Alton |
 | C&ATL Chicago & Atlantic (Erie) |
 | C&CT Chicago & Calumet Terminal (B&OCT) |
 | C&EI Chicago & Eastern Illinois |
 | C&GW Chicago & Great Western (WC) |
 | C&IW Chicago & Illinois Western (IC) |
 | C&M Chicago & Milwaukee (C&NW) |
 | C&NP Chicago & Northern Pacific (WC) |
 | C&NW Chicago & North Western |
 | C&RI Chicago & Rock Island |
 | C&WI Chicago & Western Indiana |
 | CB&Q Chicago, Burlington & Quincy |
 | CC&L Chicago, Cincinnati & Louisville (C&O) |
 | CD&V Chicago, Danville, & Vincennes (C&EI) |
 | CGW Chicago Great Western |
 | CH&W Chicago, Hammond & Western (IHB) |
 | CI&L Chicago, Indianapolis & Louisville
(Monon) |
 | CJ Chicago Junction (NYC) |
 | CLS&E Chicago, Lake Shore & Eastern (EJ&E) |
 | CM&N Chicago, Madison & Northern (IC) |
 | CT Chicago Terminal & Transfer (B&OCT) |
 | CUTC Chicago Union Transfer (BRC) |
 | EC East Chicago (PRR) |
 | EJ&E Elgin, Joliet & Eastern |
 | G&CU Galena & Chicago Union
(C&NW) |
 | GT Grand Trunk |
 | IC Illinois Central |
 | IHB Indiana Harbor Belt |
 | IN Illinois Northern (ATSF) |
 | IW Illinois Western (C&NW) |
 | J&C Joliet & Chicago (C&A) |
 | LNA&C Louisville, New Albany & Chicago (CI&L) |
 | LS&MS Lake Shore & Michigan Southern (NYC) |
 | MC Michigan Central |
 | MILW Chicago, Milwaukee & St. Paul |
 | MS&NI Michigan Southern & Northern Indiana
(LS&MS) |
 | NYC&StL New York, Chicago & St. Louis (Nickel Plate) |
 | PCC&StL Pittsburgh, Cincinnati, Chicago & St. Louis
(PRR) |
 | PFW&C Pittsburgh, Fort Wayne & Chicago
(PRR) |
 | RI Chicago, Rock Island & Pacific |
 | SCAL St. Charles Air Line |
 | SC&S South Chicago & Southern (PRR) |
 | SOO Minneapolis, St. Paul & Sault Ste. Marie |
 | TR Terminal Railroad (IHB) |
 | USY&T Union Stock Yards & Transit (CJ) |
 | WAB Wabash |
 | WC Wisconsin Central |
 | WStL&P Wabash, St. Louis & Pacific (WAB) |