Arnold David Koller fled from Germany to the Netherlands, where he found shelter in Soest on 31 December 1938. On 21 July 1939 he left for Rotterdam, where he stayed at 1 Quarantainestraat, a home for Palestine pioneers. On 3 September 1940 he became a ward at the youth aliyah shelter of the Hof van Moerkerken in Mijnsheerenland. He remained there until the shelter closed on 16 October 1940, when …