Anna Boas was a daughter of Elias Boas and Elisabeth Engelander. She married Levie Polak in Amsterdam on 2 May 1928, a son of David Polak and Rachel van West. website www.wiewaswie.nl.
In addition, a Jokos file (number 51234) on this family is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.