Hamelstraat 48 a, Rotterdam Previous house Next house Residents Abraham Mozes Polak 1876 - 1942 Emanuel Spetter 1871 - 1942 Residents in April 1942 Salomon de Lange 1884 - 1943 Marianne de Lange-van Stedum 1885 - 1943 Betje de Lange 1910 - 1942