This person is commemorated on a memorial in Vijfhuizen. More information on this memorial can be found (in Dutch) on the website of the Nationaal Comité 4 en 5 mei.
In addition, a Jokos file (number 53764) 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 6260/11353).
Ernst Bernhard Max Felix Kaufmann zat in het schooljaar 1941-1942 in klas 3G van het Joods Lyceum in Amsterdam. Bron: Dienke Hondius, Absent: Herinneringen aan het Joods Lyceum Amsterdam 1941-1943 (Amsterdam 2001) 278.