Isidore Eduard Kaas, born 30 May 1900 in Amsterdam, was a son of Joël Kaas and Schoontje Wolf Beffie. On 26 July 1920 he arrived in Den Haag, still unmarried and worked there as foreman in a tobacco factory. He lived at Van Speijkstraat 120 but left for Amsterdam again on 17 May 1921, where he came …
In addition, a Jokos file (number 18214) on this family is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.