Copy papers re Zyklon 'B'

Copy photographs of Zyklon ‘B' canisters; copy correspondence between the War Office and the London Fumigation Company re the manufacture and use of Zyklon ‘B'; military passbook of SS Gruppenführer and Generallleutnant Jakob Sporrenberg.
Former references WO.208.2169; WO.309.1602; WO.311.423