Samuel Vis was killed in concentration camp Amersfoort on 6 November 1942. He was a traveling salesman.
Death books of Camp Amersfoort; these can be consulted at the website of the National Memorial Camp Amersfoort
In addition, a Jokos file (number 50471) on this family is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.