Henriette Spijer was a daughter of Joseph Spijer and Louise Wallega. She married Karel Frank in Amsterdam on 2 August 1939, the son of Samuel Frank and Grietje Dresden. They had two children: Greta and Joseph.
City Archive of Amsterdam, archive card of Joseph Spijer and Karel Frank .
In addition, a Jokos file (number 50928) on this family is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.