At this point, Tilley wrote in his CIOS report, he was surprised at how “highly emotional” Schmitz became. What Tilley did not yet know was that he was looking at Schmitz’s secret photo album that chronicled the building history of Farben’s labor concentration camp, IG Auschwitz, from the very start. In May of 1945, almost no one, including Major Tilley, had any idea what really had happened at Auschwitz—that at least 1.1 million people had been exterminated there.