Place of birth unknown, date unknown – Place of death unknown, date unknown
Child of Leendert de Beer and his family
International Institute of Social History, Part of the archives of the Algemene Nederlandse Diamantbewerkers Bond
In addition, a Jokos file (number 14918) on this family is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.