http://i57.photobucket.com/albums/g212/ ... and098.jpg
Sporrenberg asked the Commandant to show him the gas chambers, but the latter denied their existence. He showed PW [= Prisoner of War, i.e. Sporrenberg] the baggage room and delousing arrangements and it was these that the Commandant thought had probably been mistaken for gas chambers. It is known, however, and confirmed in Report No. WVIU/LDC/982 on PW AUMEIER, who had been penal camp leader at Auschwitz Concentration Camp, that the gas chambers at Auschwitz bore the word 'Delousing' on the doors. Sporrenberg made no further investigation although he was aware that gas chambers existed and that mass exterminations were carried out there.
[edit: the image was deleted by the person, Nick Terry, who put it online]