YIVO has undertaken many major scholarly publication projects, the most recent being "The YIVO Encyclopedia of Jews in Eastern Europe", published in March 2008 in cooperation with Yale University Press. Under the leadership of editor-in-chief Gershon David Hundert, professor of history and of Jewish Studies at McGill University in Montreal, this unprecedented reference work systematically represents the history and culture of Eastern European Jews from their first settlement in the region to the present day. More than 1,800 alphabetical entries encompass a vast range of topics including religion, folklore, politics, art, music, theater, language and literature, places, organizations, intellectual movements, and important figures. The two-volume set also features more than 1,000 illustrations and 55 maps. With original contributions from an international team of 450 distinguished scholars, the encyclopedia covers the region between Germany and the Ural Mountains, from which more than 2.5 million Jews emigrated to the United States between 1870 and 1920.