From the November 2, 2014, Chicago Tribune "Next Stop: Union Station" by Nancy Maes.
Most people going through Chicago's Union Station or on their way to somewhere else, but now you can actually take a tour of it on the Chicago History Museum's walking tour.
This walking tour grew out of the museum's :Railroaders" exhibit which runs through August 15, 2015. It displays photos by Jack Delano who was commissioned in 1942 by the World War Ii's Office of War Information to document the role of the railroads in American life (and especially the war effort).
I have come across a lot of his photos on the Shorpy old picture site.
Public programs coordinator Ani Schmidt helped develop the tour and said "there are a lot of images of Union Station in the exhibit and we wanted to make them come alive."
More to Come. --RoadDog