Bettie and Leonie Marie Norden attended the 'Christelijk Lyceum' in Bussum (now 'Willem de Zwijgercollege'). In the hall of this school there is a plaquette in remembrance of them and others.
Addition of a visitor of the website
In addition, a Jokos file (number 252) on this family is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk W…