Isaac Visser married in Amsterdam on 11 Febuary 1942 to Betsy van Crefeld, daughter of Samuel van Crefeld and Mietje Blitz. City Archive of Amsterdam, archive card of Betsy van Crefeld.
In addition, Jokos files (numbers 10635, 10636) on this family or other family members are at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.
According to a list with shops of Jewish owners, compiled by the Amsterdam police in 1940, this family had a drapery shop, address: Sint Antoniesbreestraat 43 in Amsterdam. Abstracts of the …