Growing up North of Chicago in the 1960s I always loved going to the Museum of Science and Industry and seeing the Large Layout in the Great Hall. I was fascinated with the working signal system. I never saw the Steam Locomotives. I believe that the Layout was sponsored by the Santa Fe Railroad and they wanted the display to show modern railroad motive power. I was sad when I heard that they were going to dismantle the layout. ( It was getting a bit out dated ) The new HO scale layout is very well done. I was disappointed to hear that the equipment was sold on e-bay ( great for the people who were able to get one of these superb pieces into their collection ) I wish the Museum had kept them on display as part of the Museum's history.
http://midnightrailroader.blog.../p/blog-page_27.html
Steve