Northern Line extension, Kennington - Battersea Power Station, Page 32
London Underground, Overground, DLR, Tramlink and National Rail Services in BNS : r/TransitDiagrams
File:South london line future.png - Wikipedia
London Victoria station improvements - Network Rail
Is TFL planning any Victoria line extensions? If so, where to? And if not, any fan theories of locations? - Quora
Victoria line - Wikipedia
Better Connected South London : r/LondonUnderground
London Underground, Overground, DLR, Tramlink and National Rail Services in BNS : r/TransitDiagrams
A Tube Map That Never Happened, Based On Plans From The 1940s
Underground Extension To Streatham - My Streatham
Bakerloo Line extension 'firmly on track' for 2030 opening
Secrets of the Victoria Line: How each station has its own tiled mural
A Tube Map That Never Happened, Based On Plans From The 1940s
CULG - Victoria Line
The ultimate street signs, historical sites and house numbers site, Monuments and History