As a consequence of the bombing of Rotterdam on 14 May 1940, Rosetta Blommekoper, Benjamin Bekkers and their two unmarried sons lived for some time with a daughter of the couple in The Hague.
Addition of a visitor of the website
In addition, a Jokos file (number 11382) on this family is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.