Elisabeth de Beer, a daughter of Simon de Beer and Esther Andriesse, married 11 November 1936 in Leeuwarden to Aron Cohen, a son of Izak Cohen and Rebecca Vrouwtje Cohen.
City Archive of Amsterdam, archive cards of Elisabeth de Beer and Izak Cohen .
In addition, a Jokos file (number 15203) on this family is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.