Antony Polonsky is Emeritus Professor of Holocaust Studies at Brandeis University and Chief Historian of POLIN Museum of the History of Polish Jews, Warsaw. Until 1991, he was Professor of International History at the London School of Economics and Political Science. He is co-chair of the editorial board of Polin: Studies in Polish Jewry. His most recent work is The Jews in Poland and Russia, Volume 1, 1350 to 1881; Volume 2, 1881 to 1914; Volume 3, 1914 to 2008 (Oxford, 2010, 2012), published in 2013 in an abridged version, The Jews in Poland and Russia: A Short History. Hanna Węgrzynek is a chief specialist for research and historical projects at POLIN Museum of the History of Polish Jews in Warsaw. Among her books are “Czarna legenda” Żydów: procesy mordy rytualne w dawnej Polsce (The Jewish “Black Legend”: Blood Libel Trials in Old Poland, Warsaw, 1995) and Historia i kultury Żydów polskich: słownik (History and Culture of Polish Jews: A Reference Book), in cooperation with Alina Cała and Gabriela Zalewska (Warsaw, 2000). Andrzej Żbikowski has worked at the Jewish Historical Institute since 1985. Among his books are an illustrated history entitled Żydzi (Jews) in the series A to Polska właśnie and U genezy Jedwabnego: Żydzi na Kresach Północno-Wschodnich II Rzeczypospolitej : wrzesień 1939-lipiec 1941 (The Origins of Jedwabne. Jews in the North-eastern Borderlands of the Second Republic: September 1939-July 1941, Warsaw, 2006).