Archivo:Oskar Barnack.jpgDescriptionOskar Barnack.jpg English: Oskar Barnack Date by 1936 date QS:P,+1936-00-00T00:00:00Z/7,P1326,+1936-00-00T00:00:00Z/9 Source http://www.leica
Archivo:Oskar Barnack Plaque.jpgDescriptionOskar Barnack Plaque.jpg English: A commemorative plaque marks the place where Oskar Barnack first tested his Ur-Leica in Wetzlar. Date 22 August