15-year-old Anne looked very critically at the texts written by 13-year-old Anne. She gave to the texts written during the first six months in hiding an especially thorough going-over. There, the differences between the original diary and Anne's rewritten version are the greatest. Since the original diary letters from 1943 have not survived, we do not know anything about them. It is noteworthy that in The Secret Annex, Anne left out her notes about her love for Peter and her vicious remarks about her mother, such as 'my mother is in most things an example to me, but then an example of precisely how I shouldn’t do things.'
Josef Mengele (/ˈmɛŋɡələ/; German: [ˈmɛŋələ]; 16 March 1911 – 7 February 1979) was a German Schutzstaffel (SS) officer and physician in Auschwitz concentration camp during World War II. He performed deadly human experiments on prisoners and was a member of the team of doctors who selected victims to be killed in the gas chambers. Arrivals that were judged able to work were admitted into the camp, while those deemed unsuitable for labor were sent to the gas chambers to be killed. With Red Army troops sweeping through Poland, Mengele was transferred 280 kilometers (170 mi) from Auschwitz to the Gross-Rosen concentration camp on 17 January 1945, just ten days before the arrival of the Soviet forces at Auschwitz. After the war, he fled to South America where he evaded capture for the rest of his life.