Duchy of Anhalt
He was a member of the "Historischen Kommission für die Provinz Sachsen und das Herzogtum Anhalt" (Historical Commission for the Province of Saxony and the Duchy of Anhalt), and chairman of the "Vereins für Geschichte und Alterthumskunde des Herzogtums und Erzstifts Magdeburg" (Association for history and antiquities of the duchy, and archbishopric of Magdeburg).