Feb. 26, 1870: New York City Blows Subway Opportunity | WIRED
The Beach Pneumatic Transit Company – just a bunch of hot air? | MCNY Blog: New York Stories
Site of the Beach Pneumatic Subway – New York, New York - Atlas Obscura
Beach Pneumatic Transit - Wikipedia
nycsubway.org: Beach Pneumatic Transit
Evolution of Pneumatic Tube Transportation - TOMORROW'S WORLD TODAY®
Site of the Beach Pneumatic Subway – New York, New York - Atlas Obscura
Pneumatic and Control Rail Technologies | Emerson US
Blown Opportunity: New York City's Failed Pneumatic Trains | Gadgets, Science & Technology
New York City's Pneumatic Subway, a Primitive Hyperloop
The SECOND Oldest Tube: London's Lost Pneumatic Railway
Beach Pneumatic Transit: The 1870 Subway That Could Have Been? | New-York Historical Society
Beach Pneumatic Transit: The 1870 Subway That Could Have Been? | New-York Historical Society
The Beginnings of The Pneumatic Railway - The Postal Museum
The Beach Pneumatic Transit Company – just a bunch of hot air? | Museum of the City of New York
NYC's first subway was a pneumatic tube that moved passengers one block | 6sqft
nycsubway.org: Beach Pneumatic Transit
Riding the Rails: Pneumatics Is Essential to Train Travel - Fluid Power Journal
NYC's first subway was a pneumatic tube that moved passengers one block | 6sqft
