On 20 August 1942 Isaac Blitz, sales representative, and Helena Ganna de Beer, were married in Westerbork transit camp. She was a daughter of the merchant Mozes de Beer and of Rijntje Zwarts.
Record of marriage certificates of the Westerbork municipality, currently at the archives of Gemeente Midden…
In addition, a Jokos file (number 21422) on this household is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.