Gedempte Gracht 9, Den Haag Previous house Next house Residents in April 1942 Salomon Velleman 1887 - 1942 Eva Velleman-Fresco 1891 - 1942 Herman Velleman 1926 - 1943 Joseph Velleman 1921 - 1943 Residents in April 1942 Jacob Koopman 1903 - 1942 Hendrika Koopman-Engelsman 1912 - 1942 Jacob Neuburger 1932 - 1942 Barend Koopman 1922 - 1943