CCS
Contains 4 Results:
Charles Close Society for the Study of Ordnance Survey Maps, 1817 - 2017
The archive contains some working papers, indexes to Sheetlines, some of its ephemeral publications, also a collection started in 2002 of security images on CD-rom and DVD (mostly TIF images) of very rarely encountered Ordnance Survey and military maps which, because of their potentially unique state, might otherwise be in danger of extinction (CCS_218).
"OS Royal Air Force maps", 126 - 1939
List of Ordnance Survey Royal Air Force maps - quarter inch and ten mile - containing detais of printings and air information dates.
"OS Civil Aviation maps", 1920 - 1938
List of Ordnance Survey civil aviation maps - quarter inch and ten mile - containing detais of printings and air information dates.
New ¼-inch series, 1920
Experimental outline editions. Headed in red 'New ¼-inch series'.
Further information
Ordnance Survey small-scale maps Indexes : 1801-1998 / Roger Hellyer. ( Kerry, Montgomeryshire: D. Archer, 1999). Page 133, Section 54, Quarter-inch Third Edition Map of England and Wales, sub-section 4.