Krammerstraat 20 I, Amsterdam Previous house Next house Residents Residents in February 1941 Henriette Neumann-Cohn 1858 - 1942 Rika Neumann-Nathans 1909 - 1977 Max David Neumann 1895 - 1944 Residents in February 1941 Horst Norbert Kalkstein 1910 - 1941 Family member of Widow Kalkstein-Neumann and her family date unknown