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One of the “institutions” established by Korczak was his children’s newspaper Mały Przegląd (The Little Review), which was issued from 1926 to 1939 as a weekly supplement to the General Zionist daily Nasz Przegląd (Our Review).
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Korczak cooperation with W słońcu (In the Sun) was a kind of warming up before Janusz Korczaks own children’s weekly, Mały Przegląd.
W Słońcu was to start with (1913-1914) a supplement to "Z Blizka i z Daleka" run by Janina Mortkowiczowa and Stefania Sempołowska.
From 1916 W Słońcu was a separate children newspaper also run by Janina Mortkowiczowa and Stefania Sempołowska. until 1927.
