Juda Hamburg died on 22 April 1943 in Westerbork transit camp and he was cremated there on the same day. The urn with his ashes was placed on the Jewish cemetry in Diemen on field U, row 3, grave nr. 6.
Register van joden die in het kamp Westerbork zijn gecremeerd, 1943-1944; archief van de gemeente…
In addition, a Jokos file (number 12892) on this family is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.