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Chicago Subway, mezzanine station |
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Elevated railroad jackknife bridge |
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La Salle Street entrance to train tunnel, c.1908 |
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Marshfield Ave. Station of the El |
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Metro El Train crossing bridge |
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Metro El over Lake St. El |
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State & Van Buren El station, with "Green Hornet" streetcar below. c.1950 |
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Tower 18, Lake/Wells intersection, busiest railroad intersection in the world in 1919. |
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Track Elevation, 16th & Clark Sts. |
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Union Stock Yards, El Station |
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