AB,
As a "mapaholic" thanks for this. Casting about for the background to the exercise, again it mentions many collections have been destroyed while others remain in paper form in archives. Manchester seems to have been particularly lucky when the collection of 23,000 photos was saved and uploaded..
"RPs were often on corners of buildings and other immovable features and were fixed to centimetre accuracy". Where are those immovable features now at the junction of Eccles New Road and Regent Road?
"The men with the pointy sticks" - great stuff.