Izaak van der Sluis was the son of Elias van der Sluis and Sara Frank. He was butcher and cook by profession. He was married to Rebecca Heijmans, daughter of Karel Heijmans and Catharina Joels.
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In addition, a Jokos file (number 18767) on this family is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.
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