List of metro systems - Wikipedia
The Oldest Subway Stations in the US
THE WELCOME BLOG | The Early Subway in New York City
LAistory: The 1925 "Hollywood Subway" | LAist
The First Subway in New York City Was a Cylindrical Car Pushed by Air | Scientific American
The New York City subway system opened 110 years ago today; An interview with The Race Underground author Doug Most - The Bowery Boys: New York City History
Still crowded today: London's Tube, world's first subway, marks 150 years in operation – Winnipeg Free Press
History of rapid transit - Wikipedia
Take a ride down memory lane through Moscow's amazing subway system - Society & Culture - TASS
The Oldest Subway Stations in the US
Subway | History, Transportation, Cities, & Facts | Britannica
The Subway Beneath the US Capitol in Washington D.C. - Untapped New York
Only In Boston on X: "121 years ago today, America's first subway system opened in downtown Boston as the Tremont Street Subway. The 3 1/2 minute ride was said to be...lit. https://t.co/ahCYHskPyp" /
A short history of world metro systems – in pictures | Cities | The Guardian
How NYC Subway System Used to Look Over 110 Years Ago
In 1897 Boston Built America's First Subway to Help with Congestion and… Blizzards
Tremont Street subway - Wikipedia
World's oldest metro systems - Railway Technology
A short history of world metro systems – in pictures | Cities | The Guardian
ASCE Metropolitan Section - First New York City Subway
On This Day: 1904, First Underground Subway - Tenement Museum
DPMA | The world´s first subway
Boston opened nation's first subway 125 years ago
Toronto Feature: Canada's First Subway | The Canadian Encyclopedia
