NYC's First Subway, A One Block Pneumatic Tunnel Below Broadway - Untapped New York
nycsubway.org: Beach Pneumatic Transit
New York City's Pneumatic Subway, a Primitive Hyperloop
nycsubway.org: Beach Pneumatic Transit
Feb. 26, 1870: New York City Blows Subway Opportunity | WIRED
Beach Pneumatic Transit: The 1870 Subway That Could Have Been? | New-York Historical Society
The Beach Pneumatic Transit Company – just a bunch of hot air? | MCNY Blog: New York Stories
Beach's First Subway: Pneumatic Transit System - Sometimes Interesting
The Secret Subway Station in NYC... | City hall station, Nyc subway, City
City Hall Subway Station - YouTube
Site of the Beach Pneumatic Subway – New York, New York - Atlas Obscura
Pneumatic Transit (Video 2011) - IMDb
NYC's First Subway, A One Block Pneumatic Tunnel Below Broadway - Untapped New York
Beach Pneumatic Subway | Ephemeral New York
nycsubway.org: Beach Pneumatic Transit
Site of the Beach Pneumatic Subway – New York, New York - Atlas Obscura
nycsubway.org: Beach Pneumatic Transit
The Beach Pneumatic Transit Company – just a bunch of hot air? | Museum of the City of New York
The Pneumatic Subway That Almost Was - JSTOR Daily
Beach Pneumatic Transit
Site of the Beach Pneumatic Subway – New York, New York - Atlas Obscura
Beach Pneumatic Transit - Wikipedia
Beach Pneumatic | Ангельские символы, Каменный век, Станция метро
Feb. 26, 1870: New York City Blows Subway Opportunity | WIRED
