Better Connected South London : r/LondonUnderground
Rare version of Harry Beck's iconic Tube map emerges for sale for £20,000
Victoria Line The Anonymous Widower
Tube History: A Brief History of the Victoria Line - Londontopia
Tube trivia and facts - Made by TfL blog
Map, StationMasterApp
Is TFL planning any Victoria line extensions? If so, where to? And if not, any fan theories of locations? - Quora
Transit Maps: Project: Redrawing the London Tube Map
TfL announces plan to help London travel safely
Jonn Elledge: Which is London's fastest Tube line? - OnLondon
bakerloo-line-extension-consultation-report-final
Fit For The Future - TfL Plan For Modernising London Underground, London Overground, Trams & DLR
Transit Maps: Project: Redrawing the London Tube Map