In addition, a Jokos file (number 38224) on this family is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.
A Liro card exists for this person or family. The original cards are kept at the Nationaal Archief (National Archive) at The Hague.
According to a list with shops of Jewish owners this family had a factory of chemical products, address: Willemstraat 97 in Eindhoven.
List of shops and department stores owned by Jews in Eindhoven. This list is at the regional archive for the Eindhoven region.