The New York City Pneumatic Mail System delivered mail through 27 miles of pressurized tubes from 1898 to 1918.

Underground Mail Road; Modern Plans for All-but-Forgotten Delivery System

The New York City Pneumatic Mail System delivered mail through 27 miles of pressurized tubes from 1898 to 1918.

Pneumatic tube - Wikipedia, the free encyclopedia

Pneumatic tube - Wikipedia, the free encyclopedia

Flirting in the Resi, 1930—peep the pneumatic tubes! | People in 1920s Berlin Nightclubs Flirted via Pneumatic Tubes

People in 1920s Berlin Nightclubs Flirted via Pneumatic Tubes

Flirting in the Resi, 1930—peep the pneumatic tubes! | People in 1920s Berlin Nightclubs Flirted via Pneumatic Tubes

The first pneumatic tube mail system was installed in Philadelphia in 1893. New York City’s came in 1897. Each tube could carry between 400 and 600 letters and traveled at 30-35 miles per hour. In its full glory, the pneumatic tubes covered a 27-mile route, connecting 23 post offices.

The first pneumatic tube mail system was installed in Philadelphia in 1893. New York City’s came in 1897. Each tube could carry between 400 and 600 letters and traveled at 30-35 miles per hour. In its full glory, the pneumatic tubes covered a 27-mile route, connecting 23 post offices.

Helen Soros works the new pneumatic tube system to take cash at Marshall Fields store in Chicago, November 1947

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Helen Soros works the new pneumatic tube system to take cash at Marshall Fields store in Chicago, November 1947

Pneumatic tube - Wikipedia, the free encyclopedia

Pneumatic tube - Wikipedia, the free encyclopedia

People in 1920s Berlin Nightclubs Flirted via Pneumatic Tubes - Atlas Obscura

People in 1920s Berlin Nightclubs Flirted via Pneumatic Tubes

People in 1920s Berlin Nightclubs Flirted via Pneumatic Tubes - Atlas Obscura

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