Fritz Josephsohn lived at Kaiserstr. 3 (today Jacobystr.), Berlin-Mitte in 1931 and at Carmen-Sylva-Str. 103 a (today Erich-Weinert-Str.) in Berlin-Prenzlauer Berg prior to emigrating to Amsterdam on 30.04.1936. (Bundesarchiv Gedenkbuch, Jewish Addressbook Berlin 1931, Berlin Addressbook, Stadsarchi…
In addition, a Jokos file (number 40410) on this family is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.