Henriette Vorst-van Gelder gave birth to a son, Baruch Nechemia, in Westerbork transit camp on 26 June 1943. Her husband survived the war.
Record of birth certificates of the Westerbork municipality, currently at the archives of Gemeente Midden-Drenthe in Beilen
In addition, a Jokos file (number 1362) on this family is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.