In 1940, the historian Emanuel Ringelblum established a clandestine organization, code named Oyneg Shabes, in Nazi-occupied Warsaw to document and preserve the history of Jewish life in wartime Poland. Only three of its more than 60 members survived. Ringelblum and his family perished in March 1944, but not before he had managed to hide thousands of documents in milk cans and tin boxes. Searchers found two of these buried caches in 1946 and 1950. Dr. Samuel D. Kassow (Ph.D, Princeton, 1976) is an historian of Ashkenazi Jewry. Kassow is the Charles Northam Professor at Trinity College. He is a consultant to the Museum of History of the Polish Jews which opened in April 2013 on the site of the Warsaw Ghetto. Kassow is the author of Who Will Write Our History? Rediscovering a Hidden Archive From the Warsaw Ghetto and Who Will Write Our History? Emanuel Ringelblum, the Warsaw Ghetto,and the Oyneg Shabes Archive.