“N.Y. Post Office Pneumatic Tube” c. 1912. G.G. Bain Collection via Flickr. Earlier this year, we looked into the pneumatic tube system that used to carry mail between post offices in New York City. The system was 27 miles long and connected 23 post offices, and included tubes over the Brooklyn Bridge to connect the General Post Office in Brooklyn to Church Street in Manhattan. The USPS stopped using the system fully in 1953. Last week, Untapped reader @Charlesinist asked us “Anyone know where I can see remnants of the old US mail pneumatic tubes in NYC?” Today, we’ll show you where some remnants of the system are and where pneumatic tubes are still used in the city. The Old Chelsea Postal Station Flanges that are remnant pneumatic tubes at the Chelsea Post Office Source: USPS Not only is this Chelsea post office one of the many being put up for sale by the United States… Read More