Where to find late 1960's OS Maps large scale? in SHEFFIELD MAPS Posted Sunday at 19:53 I have e-mailed Local Studies for the 60's maps. They sent me a message back saying they will give me more information next week. I will let you know what happens. I identified the areas I need on four sheets. SK3787NE, SK3787NW, SK3687NE, and SK3687NW.