NYC's First Subway, A One Block Pneumatic Tunnel Below Broadway - Untapped New York
nycsubway.org: Beach Pneumatic Transit
The Pneumatic Subway That Almost Was - JSTOR Daily
nycsubway.org: Beach Pneumatic Transit
New York Pneumatic Railroad | Ghostbusters Wiki | Fandom
Van Horne! Pneumatic transit! I can't believe it's still here!", or In the NYC City Hall Subway Station At Long Last — Vivian Shaw
The First Subway: Alfred Ely Beach's Marvelous Pneumatic Transit - The Bowery Boys: New York City History
The Beach Pneumatic Transit Company – just a bunch of hot air? | Museum of the City of New York
NYC's First Subway, A One Block Pneumatic Tunnel Below Broadway - Untapped New York
The Beach Pneumatic Transit Company – just a bunch of hot air? | MCNY Blog: New York Stories
Beach Pneumatic Transit: The 1870 Subway That Could Have Been? | New-York Historical Society
The Secret Subway Station in NYC... | Park avenue nyc, Nyc train, City hall station
nycsubway.org: Beach Pneumatic Transit
Beach Pneumatic Transit: The 1870 Subway That Could Have Been? | New-York Historical Society
Beach's First Subway: Pneumatic Transit System - Sometimes Interesting
Site of the Beach Pneumatic Subway – New York, New York - Atlas Obscura
New York Pneumatic Railroad | Ghostbusters Wiki | Fandom
Beach Pneumatic Transit - Wikipedia
Site of the Beach Pneumatic Subway – New York, New York - Atlas Obscura
