Alexander Halberstadt was married to Rozette Joel. They divorced onthe 12th of June 1940 at Den Haag. Alexander lived at the Dusartstraat, while Rozette and the children moved to the President Brandstraat.
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In addition, Jokos files (numbers 16747, 30915) on these persons or other family members are at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.