The refurbishment works at Euston Square on the London Underground provided an amazing exhibition as the posters were ripped off revealing the history of what lay underneath.
Here are a couple of links about it:
> https://1londonblog.uk/2018/04/05/euston-square-the-saga-continues
> http://diamondgeezer.blogspot.com/2018/04/euston-square.html
