Elisabeth Pach was a daughter of Samson Pach and Roosje Pach - nee Delmonte. She married Isaac Klein in Amsterdam on 1 April 1942. City Archive of Amsterdam, archive card of Elisabeth Pach.
In addition, a Jokos file (number 31130) on this family is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.