adrian
Flying Squad
I've just found this link to a series of colour photos of 1940's Chicago railyards and thought it might be of interest. They have just been uploaded to the Library of Congress.
Jack Delano's Color Photos of Chicago's Rail Yards in the 1940s
Searching the Library of Congress seems to get's mixed results but you can get a reasonable selection at times.
Search results from Railroad Tracks, Delano, Jack
Jack Delano's Color Photos of Chicago's Rail Yards in the 1940s
Searching the Library of Congress seems to get's mixed results but you can get a reasonable selection at times.
Search results from Railroad Tracks, Delano, Jack