In case anyone is interested, here are a couple of links to the London School of Economics' Digital Archives. Charles Booth Digitised Archive - LSE Digital Library (arkivum.net) For Charles Booth's poverty maps of London in the 19th Century: Map | Charles Booth's London (lse.ac.uk) https://en.wikipedia.org/wiki/Charles_Booth_(social_reformer)
Good point. Thanks! Have added London too.