Sara Sluijzer was a daughter of Mozes Sluijzer and Judith Pront. She married Joseph Koopman in Amsterdam on 25 November 1920, a son of Emanuel Koopman and Schoontje Levij.
website www.wiewaswie.nl.
A list with names of employees of the Joodse Raad (Jewish Council) is kept In the archive of the Zentralstelle für jüdische Auswanderung . They may be eligible for a "Sperre". On this list also the name of Sara Koopman-Sluijzer occurs.
Archive Höhere SS-und Polizeiführer NIOD 77-1429.