German agent, Gancwajch's friend from before the war
head of the Main Propaganda Division (Oberregierungsrat der Propaganda Hauptabteilung) of the General Government
Czerniakow, Adam; Adama Czerniakowa dziennik getta warszawskiego. 6 IX 1939 - 23 VII 1942, (The Warsaw Diary of Adam Czerniakow)