Gerrit Dingsdag appears on a handwritten list of all persons who held offices with the Dutch-Jewish Community of Haarlem during the early years of the war. Photographs remain for all officers. Gerrit Dingsdag was a guard at the Dutch-Jewish Joles Hospital. He was married and lived with his wife at 46 Verlengde Cronjéstraat in Haarlem.
Jewish Historical Museum, Documents collection, inv.nr 1001