“Prohibition Against the Sale of Gunpowder and Potassium Nitrate,” patent issued by Charles VI, Archduke of Austria [Austria]: “For especially pressing and significant reasons, only those Christian traders licensed for the sale of gunpowder and potassium nitrate are allowed to do so; it follows that all Jews are excluded from it, under penalty of corporal punishment or death.” [Researcher’s note: potassium nitrate is the main ingredient of gunpowder.] Urkunden und Akten zur Geschichte der Juden in Wien (1526-1847), Vol. I. A.F. Pribram. Vienna, 1918. p. 320. Accessed online; Translated by Dominik Jacobs 3/20/2016