Salomon Frank married in 1904 to Frederika Sealtiel, who died in 1928. They had five children: Juliana, Roosje, Hartog, David and Samuel who died before the war.
After the death of Frederika Salomon Frank married to Sara Schellevis.
Stadsarchief Amsterdam, Archief van de gemeentelijke sociale dienst, inv. nr. 3458, dossier 62195
In addition, a Jokos file (number 60141) on this family is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.