Herman Costerstraat 12 b, Rotterdam Previous house Next house Residents in April 1942 Louis Posner 1911 - 1943 Catharina Posner-Pronkhorst 1912 - 1943 Joseph Posner 1940 - 1943 Abraham Posner 1934 - 1943 Sophia Posner 1937 - 1943 Betsij Posner 1942 - 1942