Addition

Salomon Werkendam and his family

Salomon Werkendam and Frederika Mok were the parents of 538474.
Stadsarchief Amsterdam, archiefkaart David Werkendam

In addition, a Jokos file (number 36511) on this family is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.