Period instruction card ' Kartenlesen' (map reading)

This is a nice - and not that easily encountered! - example of a period WH instruction-card ) which is entitled: 'Kartenlesen,and issued by Ludwig Voggenreiter Verlag Potsdam. The medium-sized card (which is folded sized: 16 x 50 cms.These cards were not 'standard issue' but had to be privately acquired by the soldiers ie. NCO's and officers. Simply a nice and not that often encountered publication.