“Ordinance” issued by the City of Frankfurt [Present-day Germany; Free Imperial City of Frankfurt]: “Jews may take no more than 1/2 a Heller in interest per week for each Gulden from citizens.”
Kurzer Abriss. Geschichte der Israeliten. Frankfurt a Main. (Short outline. History of the Israelis. Frankfurt a. Main); (www.achive.org); Accessed online; Researched and Translated by Ziba Shadjaani 1/13/2020