On 3 August 1942 two students of the Ber Borochov school at 68 Nowolipki street – Dawid Graber and Nachum Grzywacz, along with their teacher Izrael Lichtensztajn, hid the last section of the first part of the Ringelblum Archive
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22 July 1942 marks one of the most tragic dates in the history of people of Warsaw. Germans had begun deportations from the Warsaw Ghetto to Treblinka