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Date: 2011-04-29 12:04:55Transport Pneumatic tube Technology Philately United States Postal Service Alfred Ely Beach New York City Subway London Pneumatic Despatch Company Pneumatics Postal system Pipelines | Microsoft Word - Pneumaticunformatted.docAdd to Reading ListSource URL: about.usps.comDownload Document from Source WebsiteFile Size: 392,38 KBShare Document on Facebook |