About: Professor Gershon Bacon is Associate Professor of Jewish History at Bar-Ilan University, where he holds the Klein Chair for the History of the Rabbinate in Europe during the Modern Period. He is an expert in the history of East European Jewry, specializing in the social, political and religious history of Polish Jewry in the nineteenth and twentieth centuries. His numerous publications have appeared in leading academic journals in the United States, Europe and Israel. Among his best-known works are The Politics of Tradition: Agudat Yisrael in Poland 1916-1939 (1996; updated and expanded version in Hebrew, 2005) and The Jews in Poland and Russia: Bibliographical Essays (1984). He is currently engaged in research and writing of the book The Jews of Modern Poland, to be published by the University of California Press. Professor Bacon is one of the editors of the forthcoming work Jews in Eastern Europe: the Yivo Encyclopedia.