The diaries of Dawid Rubinowicz were recorded in five school notebooks from March 1940 to June 1942, show the normal childhood interrupted occupation and the German persecution. David (15 years old) died in the gas chamber. The last note took place on 22 September 1942. Found after the war, diaries have been published in many countries around the world. Edition: “The Diary of Dawid Rubinowicz”, Książka i Wiedza, Warszawa 1987, p. 116.