Tweede Boerhaavestraat 67 II, Amsterdam Previous house Next house Residents Jozef Leisen 1914 - 1945 Partner of Jozef Leisen and family date unknown Sara Witsenhuijsen-Klok 1865 - 1943 Residents in February 1941 Soesman Polak 1886 - 1943 Rebecca Polak-Witsenhuijsen 1887 - 1943