“General-Protection-Patent” (“Generalschutzpatent”) issued by the Prussian Government [Present-day Germany, Poland, Russia; Duchy of Brandenburg/Prussia] [Provisional]: “[…] The Jews of Frankfurt are strictly prohibited to export any raw goods from the country. […]”
Stern, Selma: Der Preussische Staat und die Juden; Erster Teil/Die Zeit des Großen Kurfürsten und Friedrichs I; (“The Prussian State and the Jews; Part One/The Period of the Great Prince-Elector and Frederick I”); (Tübingen; 1962); Researched and Translated by Ziba Shadjaani 9/16/2017