“Ordinance of Mainz” issued by the Electorate of Mainz* [Electorate of Mainz; Present-day Germany]: “[…] Jews are obliged at the threat of nullification, to prepare and maintain their trade-books, contracts, and certificates/official documents in the German language and to use German letters/alphabet to sign them. […]” [Researcher’s note: *The Ordinance of Mainz (sometimes also known by its English name ‘Mayence’) was not only valid in the Archbishopric/Electorate of Mainz, but also in the Principality of Aschaffenburg when the latter became part of the Electorate of Mainz.]
Sammlung der im Gebiete der inneren Staats-Verwaltung des Königreichs Bayern bestehenden Verordnungen aus amtlichen Quellen geschöpft und systematisch geordnet von G. Döllinger, König. bayer. geheimen Hausarchivar und wirklichen Rath. Sechste Band; (München; 1838); (Collection of Regulations/Ordinances Existing in the Territories of the Internal State Administration of the Kingdom of Bavaria from official sources and systematically arranged by G. Döllinger, Royal Bavarian Secret House-Archivist and True Advisor; Volume VI), (Munich; 1838); Researched and Translated by Ziba Shadjaani 6/13/2018