Jacob Visser married in Amsterdam on 23 July 1941 to Marianne Root, daughter of Juda Root and Schoontje Brilleman. City Archive of Amsterdam, archive card of Marianne Root.
In addition, Jokos files (numbers 12045, 12047) on this family or other family members are at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.