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Explore the forgotten history of New York City's revolutionary pneumatic mail system in this 14-minute documentary video. Discover how a 27-mile underground network of steel tubes once transported 100,000 letters daily at 35 miles per hour using only air pressure, connecting 23 post offices across Manhattan and Brooklyn from 1897 to 1953. Learn about the ambitious engineering behind this nearly invisible communication system that moved mail faster than surface transportation, featuring steel canisters that shot through underground passages with remarkable efficiency. Uncover fascinating stories from the system's operation, including ceremonial cat launches, same-day Wall Street contract deliveries, dangerous tube explosions, and unexpected sandwich deliveries. Examine the factors that led to the decline of this ahead-of-its-time technology and understand why such an innovative system became obsolete within just a few decades. Investigate what physical remnants of this extensive pneumatic network still exist beneath New York's streets today, providing tangible connections to this remarkable chapter in American urban infrastructure history.
