Sara Boekenwas a daughter of Mozes Boeken and Debora Vogel. She married Hijman Elzas, a son of Mozes Elzas and Esther Koopman on 6 December 1939 in Amsterdam.
Stadsarchief Amsterdam, archiefkaart Mozes Boeken and Hijman Elzas.
In addition, a Jokos file (number 36115) on this family is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.