Moritz van der Hak and Aaltje van den Berg married around 1906. They had two children who survived the war. Aaltje had another child from a previous relationship who also survived the war.
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In addition, a Jokos file (number 7579) on this family is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Wer…