International aeronautical maps of the world /
Great Britain.War Office.General Staff.Geographical Section.
Mumford, Ian,former owner.StEdNL
At head of every sheet: Provisional.
Conventional signs for the basic maps -- Conventional signs for aerial information (black) plates (plate I) -- Conventional signs for aerial information (black) plates (plate II) -- Conventional signs for aerial information (black) plates (plate III) -- Amendment sheet -- Elaboration sheet -- Amendment sheet [second copy].
Presented by the Executors of the late Dr Ian Mumford.