In September 1941 Elias van der Sluis was enrolled in the state commercial secondary school in Den Bosch. In October Elias van der Sluis had to transfer to the Joods Lyceum.
Lists of students at schools in Den Bosch are kept in the municipal archive in Den Bosch
In October 1941 Elias van der Sluis was enrolled in the Joods Lyceum in Den Bosch.
Data on Jewish students at schools in Den Bosch and data on students at the Jewish Lyceum [secondary schools that the Nazis forced Jewish students to attend] in Den Bosch