Willem Barend Grijsaart and Eva Nabarro lived together from at least 1939. Their spouses were treated in the Apeldoornse Bos.
Stadsarchief Amsterdam, archiefkaarten Willem Barend Grijsaart en Eva Nabarro
In addition, a Jokos file (number 31153) on this family is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.