On 26 February 1814 King William I decreed that the Nederlandsch Israëlitisch Seminarium (NIS) was to be established in Amsterdam to train rabbis, teachers and other officers serving the Jewish community.
Max de Vries, son of Isaac, attended the NIS.
The name of Isaac de Vries appears on a handwritten list of the individuals who held offices within the Dutch-Jewish Community in Haarlem during the early years of the war. Photos remain of all the staff members. Isaac de Vries was vice-chair of the Synagogue District of North-Holland and was as suc…