 From 1776 they were allowed to reside exclusively in two villages, Lengnau and Oberendingen, in what is now the canton of Aargau.At the close of the 18th century, the 553 Jews in these villages represented almost the entire Jewish population in Switzerland.An important source for the situation of Swiss Jews in the 18th century is the 1768 "Sammlung Jüdischer Geschichten" by Johann Caspar Ulrich.