Pre-trial hearings of former employees of the Berlin Gestapo for deportation of Jews to extermination camps and against Fritz Woehrn: Examination of former employees of the RSHA and the Gestapo in Duesseldorf, especially regarding the extent of knowledge of Gestapo employees regarding the fate of the deported Jews and the role of RSHA IV B 4 in the deportations; Testimonies by Berlin Jewish survivors, 1968