In addition, a Jokos file (number 35299) 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 6128/1347).
In Frankfurt am Main recently so called Stolpersteine were placed for Ernst Kantorowicz and his family. On the website Frankfurt.de a family biography has been published.