According to the "Sterbebücher" (death records) of Auschwitz, David Ritmeester was murdered there on 20 August 1942. This date is different from the official date of death of 30 September 1942, as determined by the Dutch Ministry of Justice after the war. For the time being, the website joodsmonument.nl, list only the dates of death, as published at the time in the "Nederlandse Staatscourant" (Dutch Government Gazette) by the Ministry of Justice.
Death of David Ritmeester as recorded in the death index (Sterbebücher) of Auschwitz.
Official death certificate nr. 554 dated 4 August 1950 for David Ritmeester.