The Mazal Holocaust Collection is the largest privately owned Holocaust-related archive in the world.
[2] Some of its items include aerial photographs of the Auschwitz concentration camp and transcripts of the Nuremberg Trials.
[2] Additionally, it includes old copies of Der Stürmer, books of Holocaust denial, and material published by the American Nazi Party in the 1930s.
[2][3] Mazal only found out he was Jewish as a teenager, and he began collecting documents related to the Holocaust then.
[4] In 2011, Mazal discovered one of his employees was stealing and selling some of his collection; the thief was sentenced to eight years in prison in 2014.