What did he do all of that for?
Was there ever any Nazi documents discovered showing plans for mass execution of Jews in concentration camps? Were there any papers, blueprints, or other documents showing the design and implementation of gas chambers? Was there any documents showing orders from Hitler or others to gas Jews?
Surely you can't carry out an operation of that magnitude without diagrams, blueprints, official orders, logistical planning, protocols, and other things that would be present in official documents somewhere