![When a Labyrinth of Pneumatic Tubes Shuttled Mail Beneath the Streets of New York City | History | Smithsonian Magazine When a Labyrinth of Pneumatic Tubes Shuttled Mail Beneath the Streets of New York City | History | Smithsonian Magazine](https://th-thumbnailer.cdn-si-edu.com/6pzaCmeYKMe9DyFKi8sIw8dIZRQ=/fit-in/1600x0/filters:focal(700x507:701x508)/https://tf-cmsv2-smithsonianmag-media.s3.amazonaws.com/filer_public/27/b4/27b41115-109e-45df-869d-45f64d58962e/pneumatic-tube.jpg)
When a Labyrinth of Pneumatic Tubes Shuttled Mail Beneath the Streets of New York City | History | Smithsonian Magazine
![Tim Dunn on X: "London's long-forgotten pneumatic postal tube network! It ran from House of Commons to the Tower, via the City & GPO and grew to 40 route miles by 1909 - Tim Dunn on X: "London's long-forgotten pneumatic postal tube network! It ran from House of Commons to the Tower, via the City & GPO and grew to 40 route miles by 1909 -](https://pbs.twimg.com/media/E0Hys7OXIAAg6hL.png)
Tim Dunn on X: "London's long-forgotten pneumatic postal tube network! It ran from House of Commons to the Tower, via the City & GPO and grew to 40 route miles by 1909 -
![Major cities used to deliver mail around using pneumatic tube systems. - The More You Know post | Pneumatic tube, National city, City Major cities used to deliver mail around using pneumatic tube systems. - The More You Know post | Pneumatic tube, National city, City](https://i.pinimg.com/736x/6e/bd/a4/6ebda4d80654d9b49987f0a08b580a44.jpg)