In addition, a Jokos file (number 38430) on this household is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.
Elias Fresco and Betje Alter had two children of whom one survived the war. The eldest son, Henri Jacques Alter died during the war.
According to a visitor to the website, there is a third child within this family who survived the war. However, we have not found any sources that can confirm this.