Jacob Hillesum studied medicine in Amsterdam. He was a registrar at the Nederlands-Israëlitisch Ziekenhuis (Dutch-Jewish hospital) at 110 Nieuwe Keizersgracht in Amsterdam. Coppenhagen lists this address as the last address of Jacob Hillesum.
J.H. Coppenhagen, Anafiem Gedoe‘iem. Overleden joodse artsen uit Nederland 1940-1945 (Rotterdam 2000) 101
This person is commemorated on a memorial in Deve…