Isaac Swalef died on 6 February 1943 at the age of 80 in camp Westerbork. He was buried in the Jewish cemetery in Assen on 10 February 1943.
Jewish Historical Museum, Documents collection, inv.nr 3397; Death register of the Jewish community Assen
The funeral records at the Jewish cemetery in Assen …
In addition, a Jokos file (number 722) on this family is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.