I posted a link to the B&O story on this site to message boards for the old North Shore Line and Chicago Aurora & Elgin lines. Here are some of the reponses:
Sorry, that wasn't a "spur." That was the original B&O main line into Chicago, tying into the IC at Rockdale (72nd Street.) The line on IC's South Chicago Branch from 83rd Street south was part B&O. One can
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