I am always interested in this guy. I went to the Holocaust Museum in DC a few years ago, I really had to think about that. I knew about everything in there except one thing. IMB had a machine used at prison camps that was a punch card with info on each card for every single person they had. You walk thru a train car that actually transported people to a death camp. When you walk into the Museum they take away your purse's/cameras/belongings and give you a card. Just like they did to the people sent to those death camps.