Can anyone tell me where I can get any Wirral digital maps 1950s with the numbers of buildings on which I can compare with late 1800s and early 1900s maps (so can lookup from a street directory) as there doesn't seem too much difference in their streets/roads etc.I'd like to colour in various buildings pubs, churches Library? Archives? Online - to download or buy (cd/dvd)? examples below (don't recall where from - a friend?