Herman Polak and Sarah Cardozo married for the first time in 1926 in Amsterdam. They divorced in 1932. They married a second time on 6 May 1942 in Amsterdam.
Stadsarchief Amsterdam, archiefkaart Herman Polak
In addition, a Jokos file (number 51235) on this family is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.