Gerstein Report
The Gerstein Report was written in 1945 by Kurt Gerstein, Obersturmführer of the SS-TV, who served as Head of Technical Disinfection Services of the SS during the Second World War and in that capacity supplied a pesticide, based on hydrogen cyanide, Zyklon B, from Degesch (Deutsche Gesellschaft für Schädlingsbekämpfung) to Rudolf Höss in Auschwitz and conducted the negotiations with the owners. On 18 August 1942, along with Rolf Günther and Wilhelm Pfannenstiel, Gerstein witnessed the gassing of some 3,000 Jews in the extermination camp of Belzec in occupied Poland.