تويتر \ Super Grover على تويتر: "@BeschlossDC Beach Pneumatic Transit was the first attempt to build an underground public transit system in New York City. It was developed by Alfred Ely Beach
Feb. 26, 1870: New York City Blows Subway Opportunity | WIRED
nycsubway.org: Beach Pneumatic Transit
Beach's First Subway: Pneumatic Transit System - Sometimes Interesting
nycsubway.org: Beach Pneumatic Transit
The Beach Pneumatic Transit Company – just a bunch of hot air? | MCNY Blog: New York Stories
Beach Pneumatic Transit - Abby Digital Renders - Digital Art, Science & Technology, History - ArtPal
NYC's first subway was a pneumatic tube that moved passengers one block | 6sqft
New York Pneumatic Railroad | Ghostbusters Wiki | Fandom
Beach Pneumatic Transit: The 1870 Subway That Could Have Been? | New-York Historical Society