Femma Snoek was a daughter of Barend Snoek and Rachel Hagenaar. She married Maurits Davids in Amsterdam on 28 April 1938. City Archive of Amsterdam, archive card of Barend Snoek.
In addition, a Jokos file (number 31693) on this family is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.