Salomon David Frank had a shop in Echteld from 1934 and was an active member of the village community.
On 4 May 2008 a documentary was broadcasted on the Frank family, based on film material in the Jewish Historical Museum.
In addition, a Jokos file (number 16340) on this family is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.