Dr. Arthur Gumbert was jurist. He moved in February 1936 to the Netherlands. There he became second chairman of the Zentralverein deutscher Emigranten (ZdE), Abteilung Holland.
P. Schulze, Dokumentation der jüdischen Opfer des Nationalsozialismus in Hannover (Hannover, 1993)
In addition, a Jokos file (number 31604) 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 looted securities or bonds. (W-claim, number A9/774).