I'm taking part in a physical challenge project which traces (via running and cycling) the water pipeline from Haweswater (Cumbria) to Manchester. I'm currently trying to find any maps that actually show the pipeline ans someone has suggested that it will be visible on old OS maps of the region.
Does anyone have access to such wonderful artefacts (1940 -60 may suffice?) or know where the best place is to study them?
many thanks.