New York City used to deliver mail through underground pneumatic tubes. They managed to deliver all sorts, including food using the same tube.

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A click of pneumatic tubes of 1860s — Pneumatic tubes of 1860s

New York City used to deliver mail through underground pneumatic tubes. They managed to deliver all sorts, including food using the same tube.

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An image of a woman working on the pneumatic tubes — pneumatic tubes

During the 1860s, American inventor, Alfred Ely Beach first proposed the idea of a rapid underground system to beat the traffic congestion on top.

A sketch of Alfred Ely Beach, inventor of the pneumatic tubes — Alfred Ely Beach, inventor of the pneumatic tubes

Check out the stories behind some inventions that changed the world!

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