Volgens het Auschwitz museum is Aaron op 28 augustus 1942 in Auschwitz overleden:
Partially preserved data about Auschwitz prisoners
From the data contained in the so called Death Books of Auschwitz Concentration Camp Davids, Aaron Barend
Amsterdam
b.1904-09-25 (Amsterdam), denomination:mosaisch, …
In addition, a Jokos file (number 16979) 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 …