Israel Izaak Zwaneweber and his family placed a letter of condolence in December 1940 for 550608.
In addition, a Jokos file (number 10453) on this family is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.
According to a list with shops of Jewish owners, compiled by the Amsterdam police in 1940, this family had a delicatessen, …