Käthe Sophie Franken was a daughter of Maximilian Louis Franken en Grethe Wolff. Her parents lived at the same address. Addition of a visitor of the website
In addition, a Jokos file (number 54357) on this family is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.The Jokos file reveals that a claim was lodged for compensation for valuables surrendered to the Lippmann-Rosenthal looting bank (L-claim, number 9899/16277).