Here we see the key for one of the RAF's silk escape maps, in this case sheet D, covering the Belgium-German border, the south-east of France, south-west of Germany and most of Switzerland.
Donated by Mitchell Walters , son of Ian
How to cite this article:
Rickard, J (3 December 2015), Key to RAF Silk Escape Map, Sheet D , http://www.historyofwar.org/Pictures/pictures_raf_silk_escape_map_D_key.html
