Carlo Mattogno wrote a paper about Shlomo Venezia testimony in 2010, called: "The truth about the gas chambers". I put the link down below. In chapter 4, "The BIIa Quarantine Camp", he wrote: On 4 August 1943, SS-Sturmbannführer Karl Bischoff, head of the Zentralbauleitung, replied to SS-Hauptsturmfü ...