August Jacobs, owner of a shop in office supplies, was married to Henriette Hart. She attended the wedding of her daughter Henriette to Geerd Gerson. The marriage was performed at Westerbork transit camp on 16 April 1943. Henriette Jacobs-Hart signed the marriage certificate.
Record of marriage certificates of the Westerbork municipality, currently at the archives of Gemeente Midden-Drenthe in Beilen
In addition, a Jokos file (number 9725) on this family is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.