I love comparing historical and present
My first resort when planning details of a tour is my 1926 set of Muirhead's blue guides, and then seeing what is still there, destroyed or changed. You can get more up to date versions, but this set suits me.
Even more poignant is that one copy (Scotland) was "bookmarked" with bus tickets all the way through. It was obvious that the previous owner had used the book in the 1920s and 1930s by bus and then used the tickets to mark the pages
I have left them there