Abraham Jas, son of Jacob Jas and Saartje Cohen, was married to Alida Zwalf on 12 Jun 1935 in Amsterdam. On 22 Apr 1937 a daughter, Sonja Marianne, was born to Abraham and Alida.
In addition, a Jokos file (number 53082) on this household is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.