First passenger trains complete journeys on London's new Northern Line Extension - Urban Transport Magazine
The world's first underground electric railway - Footprints of London
Video: London Unveils Futuristic New Tube Trains
London Underground - Wikipedia
History of the London Underground - Wikipedia
World's oldest metro systems - Railway Technology
The first baby born on the Tube - Untold lives blog
Piccadilly Line trains: a journey from 1891 to 2025 - Rail Engineer
First Day of the London Tube | History Today
London Underground - Wikipedia
FOCUS TRANSPORT: 150th Anniversary of Tube
London Underground: How Was It Built? | London 2000 Years of History | Channel 5 #History - YouTube
The next train is the 1898 service | UK | News | Express.co.uk
First london underground hi-res stock photography and images - Alamy
Jan. 10, 1863: Take the Tube | WIRED
A brief history of the Tube | Eland Cables
Vintage: Early Days of the London Underground | MONOVISIONS - Black & White Photography Magazine
When did the tube do away with first class? – sayre zine
A very short history of the Underground | London Transport Museum
Steam train returns to London Underground for the first time in a century to mark 150 years since the Tube was opened | Daily Mail Online
The amazing story of when the Queen rode a London Underground Tube for first time - MyLondon
A history of the London Underground - BBC Newsround
A history of the London Underground - BBC Newsround
A very short history of the Underground | London Transport Museum
Steam trains runs on London Underground for first time in over 100 years: Metropolitan Steam Locomotive Number 1 goes from Earl's Court to Moorgate - Mirror Online
