David Kops married Anna Bosboom on 15 April 1942 in Amsterdam.
Stadsarchief Amsterdam, archiefkaart David Kops
David Kops joined the Hollandia-Kattenburg textile factory in Amsterdam on 27 December 1940. On Wednesday, 11 November 1942, around 4:30 PM, Willy Lages conducted the Sicherheitspolizei raid on the Hollandia factories. All exits were blocked, and the Jewish staff members were taken away that evening. Photographs of all workers taken away that evening, as well as those deported previously, appear in the 'Boek der tranen' [Book of tears].
Jewish Historical Museum, Documents collection, inv.nr B1376, 'Boek der tranen' [Book of tears]
In addition, a Jokos file (number 31454) on this person is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.