Clara Houtkruijer–Duits and her son around 1942 in the Hunzestraat Amsterdam in front of the apartment of Miep Gies (my grandparents Duits lived a couple of doors down at #33).
In addition, a Jokos file (number 33817) on this family is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.