Sophie Kahn was the widow of Meijer (Martijn) Kalker, son of Bertha Edersheim. Meijer Kalker passed away in 1928.
Addition of a visitor of the website
In addition, a Jokos file (number 5682) 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 6053/11387).