Rijnstraat 235 III, Amsterdam Previous house Next house Residents in May 1941 Isaäc Polak 1908 - 1944 Henriette Polak-de Haas 1917 - 1943 Residents Samuel Jonas Karniol 1887 - 1943 Residents in February 1941 Friedel Sindel-Straus 1886 - 1942 Roman Sindel 1915 - 1943 Child of Widow Friedel Sindel-Straus and her family date unknown