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Post Office pneumatic tube system
Post Office pneumatic tube system
TitlePost Office pneumatic tube system
DescriptionCaption: "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... "
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RepositoryUniversity of Illinois at Urbana-Champaign
Subject NameUnited States. Post Office (Chicago, Ill.)
SubjectPost offices
Pneumatic tubes
Coverage-SpatialThe Loop (Chicago, Ill.)
PublisherUniversity of Illinois at Urbana-Champaign
University of Illinois at Chicago
RightsImages in this collection were digitized through the University of Illinois Library's participation in the Open Content Alliance and may be used freely. Attribution to the University of Illinois is appreciated. High-resolution images can be downloaded from the Internet Archive at For further information, contact
Sub-CollectionInterior Scenes
Book TitleChicago, the Great Central Market : a magazine of business
CollectionPicture Chicago
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