Mietje Ossendrijver was a daughter of Salomon Ossendrijver and Heitje Welstand. She married Simon Buijs in 1915 in Amsterdam. Stadsarchief Amsterdam, archiefkaart Mietje Ossendrijver
In addition, a Jokos file (number 6805) on this family is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.
List of shops with Jewish owners in Amsterdam as reported by the police in 1940This list is in the police records at the municipal archive in Amsterdam.