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Chicago tunnels

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  • chbuckeye
    Interesting blog post, with photos and some discussion of old mail tunnels connecting commercial buildings, and additional links.
    Message 1 of 1 , Jun 14, 2010
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      Interesting blog post, with photos and some discussion of old mail tunnels connecting commercial buildings, and additional links.

      http://www.urbanohio.com/forum2/index.php/topic,23497.0/topicseen.html
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