1961 map of the railroads serving the Chicago metropolitan area. There is an inset that provides detail on railroad lines and facilities in the downtown core of the city.
Map from an early atlas comparing the 1855 Colton maps of Saint Louis, Missouri, and Chicago, Illinois. The plans of Chicago and St. Louis are on the same scale.
Map of lines of the Chicago Rock Island and Pacific and others in the vicinity of LaSalle Street Station. Approximate location of Double Track Connection with Grand Central Terminal Depot used during the construction of the LaSalle Depot