Next to Sara and Alida, Benjamin Koster and Anna Blits also had a son, Gerrit, who lived in the psychiatric facility Apeldoornse Bos.
Addition of a visitor of the website
In addition, a Jokos file (number 21043) on this family is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.The Jokos file reveals that a claim was lodged for compensation for valuables surrendered to the Lippmann-Rosenthal looting bank (L-claim, number 67094247).
A Liro card exists for this person or family. The original cards are kept at the Nationaal Archief (National Archive) at The Hague.