Samuel Drukker, Zadok Drukker and a third child that lived at another address and survived the war, were children of Mozes Drukker and his first wife. She most likely died in 1933.
Addition of a visitor of the website
In addition, Jokos files (numbers 14003, 33081) on this family or other family members are at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.