Back in the day post offices (in NYC) were connected with pneumatic tubes, Popular Science 1951 – Link.
2 thoughts on “What happens when you mail a letter”
Comments are closed.
What happens when you mail a letter
Back in the day post offices (in NYC) were connected with pneumatic tubes, Popular Science 1951 – Link.
Comments are closed.
Some of the tubes are still contiguous. Somebody was making noises about running fiber through them.
It’s an Internet of tubes, if you will.