Saartje Spijer was a daugther of Meijer Spijer and Annaatje Jacob Frankvoorder. She married on 22 June 1905 in Amsterdam to Jacob Levie Beek, who passed away on 22 April 1922 in Apeldoorn. The couple had one daughter Anna, who did not survive the Holocaust.
City Archive of Amsterdam, archive card of Saartje Spijer.
In addition, a Jokos file (number 2468) on this person is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.