About Jakob Schall
Jakob Schall was an historian, who, like Ringelbaum in Warsaw, had collected material on the fate of the Lvov Jewry.
During August 1942, Jews from more than twenty communities in Eastern Galicia, one of the heartlands of the Jewish diaspora, were deported to Belzec. Among them were more than forty thousand from Lvov. The round ups began on 10 August and continued till 23 August 'turning into a city of nightmare and blood'.
Schall's note, hidden away by him, were all lost at his death.
The Holocaust – Martin Gilbert, page 410