Juda Elias Viskoper was a son of Elias Viskoper and Eva Boas. He married in Den Haag on 9 October 1935 to Alida Prins, daughter of Jonas Prins and Roosje Koekoek.
Civil Registry of Den Haag, family registration cards of Juda Elias Viskoper and Elias Viskoper and City Archive of Amsterdam, archive ca…
In addition, a Jokos file (number 51352) on this family is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.