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|Title||Post Office pneumatic tube system|
|Description||Caption: "End of the big pneumatic tube system in the basement of the Chicago Post Office." From text: "The underground pneumatic tube system is the largest of the kind in the world. There are three double-tube trunk lines, aggregating over eighteen miles of eight-inch cast iron pipe. Of these lines the stockyards branch is the longest, the station being six and one-half miles away from the post-office, requiring thirteen miles of pipe. Relay stations on this line are at Twelfth and Twenty-second streets ... "|
|Link to the Full-Text||http://hdl.handle.net/10111/UIUCOCA:chicagogreatcent321906chic|
|Repository||University of Illinois at Urbana-Champaign|
|Coverage-Spatial||The Loop (Chicago, Ill.)|
|Book Title||Chicago, the Great Central Market : a magazine of business|