Hanna Klatser was a daughter of Mozes Jacob Klatser and Heintje Meijer Klok.
Stadsarchief Amsterdam, archiefkaart Hanna Klatser
In addition, a Jokos file (number 20572) on this person is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.