GSGS (Series) ; 4369. 5th ed. "Provisional". "R.A.F. (war)" stamped on top left corner. "Compiled on a modified polyconic projection (based on the international 1:1,000,000 map). from the Ordnance Survey of Great Britain, and Northern Ireland, and Eire; 1:253,440, & Admiralty charts." Part of the Gordon Griffith fonds.