London Underground
Metro: The Story of the Underground Railway (Mitchell Beazley Art & Design S.)
No Need to Ask! Early Maps of London's Underground Railways
One Stop Short of Barking: Uncovering the London Underground
The London Underground: A diagrammatic history
The Subterranean Railway: How the London Underground Was Built and How It Changed the City Forever
Underground Art: London Transport Posters, 1908 to the Present