Abraham Polak was a son of Aron Polak and Esther Bierschenk. He married 29 December 1937 in Amsterdam to Mozelina van der Glas, daughter of Mozes van der Glas and Saartje Vleesdrager.
City Archive of Amsterdam, archive card of Aron Polak and Abraham Polak .
In addition, a Jokos file (number 50087) on this family is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.