Pneumatic tube system on duty in a restaurant...
Helen Soros works the new pneumatic tube system to take cash at Marshall Fields store in Chicago, November 1947
Pneumatic tube transport system
PHOTO - CHICAGO - MARSHALL FIELD'S DEPARTMENT STORE - PNEUMATIC TUBE SYSTEM OPERATOR - DEPARTMENTS USED TO SEND ALL CASH DOWN IN A CONTAINER...
Long before the Internet was a glimmer in Al Gore’s eye, a different series of tubes helped shuttle messages from one place to another, seemingly by magic.
That Time People Sent a Cat Through the Mail Using Pneumatic Tubes - "The Cat in the Canister": It's like a Dr. Seuss story, only it actually happened.
pneumatic tubes - Google Search
An advertisement with Heineken and Pneumatic Tube Systems
Over a century before the Hyperloop was a sparkle in Elon Musk's mind, a revolutionary series of high-tech pneumatic tubes shot capsules of mail around New York City - just feet below the bustling sidewalk.