An old engraving of a pneumatic tube system for delivering small items (mail and packages) short distances around an office or factory. It is from a Victorian book of the 1880s. Pneumatic
Pneumatic System of the New York Public Library – New York, New York - Atlas Obscura
The Beginnings of The Pneumatic Railway - The Postal Museum
/cdn.vox-cdn.com/uploads/chorus_image/image/46597462/GettyImages-90777094.0.0.jpg "The golden era of the pneumatic tube — when it carried fast food, people, and cats - Vox")
The golden era of the pneumatic tube — when it carried fast food, people, and cats - Vox
5 Remnants of NYC's Pneumatic Tubes And Where to Find Them - Untapped New York
The pneumatic tube's strange 150-year journey - YouTube
On The Blower: London's Lost Pneumatic Messaging Tubes
Pneumatic Tube Mail | National Postal Museum
That Time People Sent a Cat Through the Mail Using Pneumatic Tubes - The Atlantic
Pneumatic tube mail in New York City - Wikipedia
Pneumatic Philadelphia
:no_upscale()/cdn.vox-cdn.com/uploads/chorus_asset/file/10630569/women_pneumatic_tubes_nyc_office_building.jpg "How pneumatic systems have captivated New York for over 100 years - Curbed NY")
How pneumatic systems have captivated New York for over 100 years - Curbed NY
A Love Letter to the Lost World of the Parisian Pneumatic Post
Secret Marvel: NYC's Pneumatic Mail Tubes - YouTube
Pneumatic Tube Mail in the United States of America
That Time People Sent a Cat Through the Mail Using Pneumatic Tubes - The Atlantic
Hospitals Still Use Pneumatic Tubes—and They Can Be Hacked | WIRED
Pneumatic tube message system Banque d'images noir et blanc - Alamy
Pneumatic tube - Wikipedia
Tube pneumatique transports, poste, courrier électronique Photo Stock - Alamy
What happened to St. Louis' pneumatic-tube mail system?
New York's mail once carried by underground tubes - FreightWaves
Tube mail hi-res stock photography and images - Alamy
/https://tf-cmsv2-smithsonianmag-media.s3.amazonaws.com/filer_public/b2/65/b265f903-13eb-441a-b8b5-9ac441caf7d5/015_032_0001.jpg "When a Labyrinth of Pneumatic Tubes Shuttled Mail Beneath the Streets of New York City | History | Smithsonian Magazine")