This story began on a Saturday. In Autumn 1940, a group of several dozen people living in the Warsaw Ghetto began to collect and edit an extensive account of the fate of Polish Jews under German occupation. At that time they weren’t yet aware that increasing persecution will develop into mass extermination of their nation, and that the work which they decided to pursue will become the most important testimony of the Holocaust. They held their meetings on Saturdays, hence the name Oneg Shabbat "the joy of Sabbath" in Hebrew. Find out about the biographies of the group's members – the creators of the Underground Archive of the Warsaw Ghetto.