Martha Silten-Friedberg committed suicide in camp Westerbork.
Oorlogsarchief Nederlandse Rode Kruis (War archives of the Dutch Red Cross), Coll. Westerbork, nr. 298
Martha Friedberg, spouse of E. Silten, died on 7 July 1943 in Westerbork transit camp and she was cremated on 12 July 1943. The urn with her ashes was placed on the Jewish cemetry in Diemen on field U, row 9, grave nr. 23.
Register van joden die in het kamp Westerbork zijn gecremeerd, 1943-1944; archief van de gemeente Westerbork, opgenomen in het archief van de gemeente Midden-Drenthe te Beilen, inv. n 3789