Vintage maps

[ppppenguin]

I looked at my own area (London N12) and moving a little west I saw the ill fated northern Line extension from Mill Hill East to Edgware on the 1955-1961 map. All that remains now is the single track branch from Finchley Central to Mill Hill East. This has a dramatic viaduct over the Dollis Valley: https://en.wikipedia.org/wiki/Dollis_Brook_Viaduct