“General-Privilege” (“Generalprivileg”) issued by Frederick William I (“Friedrich Wilhelm I”) [Present-day Germany, Poland, Russia; Kingdom of Prussia/Duchy Brandenburg]: “[…] the Jews are strictly prohibited to export raw bovine and horse skin. […]”
Stern, Selma: Der Preussische Staat und die Juden; Zweiter Teil/Die Zeit Friedrich Wilhelm I; (“The Prussian State and the Jews; Part Two/The Period of Frederick Wilhelm I”); (Tübingen; 1962); Researched and Translated by Ziba Shadjaani, 9/16/2017