Marcus Kok studied medicine in Amsterdam, where he sat for his medical finals on 10 March 1926. He lived and practised medicine at 7 Olympiastraat in Amsterdam. Marcus Kok died en route from Buchenwald to Theresiënstadt.
J.H. Coppenhagen, Anafiem Gedoe‘iem. Overleden joodse artsen uit Nederland 1940…
In addition, a Jokos file (number 1636) on this family is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.The Jokos file reveals that a claim was lodged for compensation for looted securities or bonds. (W-claim, number C5/1945).