NOSN TSHATSHKES (b. December 28, 1885)
He was born in Stanislawów (Stanisle), eastern Galicia. He was raised in Lemberg in an assimilated Jewish household. He worked as a medical doctor. Over the years 1914-1918, he was a military doctor in the Austro-Hungarian army on the Russian and Italian front. After the war he lived in Hamburg, Germany. He changed his name to Kosta and worked as a hospital doctor. In 1903 he published (under the pen name Y. Kitrun) Zionist articles in the Polish Jewish periodicals: Morija, miesięcznik literacko-społeczny poświęcony żydowskiej myśli religijnej (Moriya, monthly literary society devoted to Jewish religious thought), of which he was also chief editor, and Wschód (East). He mastered Yiddish and, together with Dr. Heinrich Fost, published in Lemberg (1914) Dos yudishe interesante blat (The interesting Jewish newspaper), an illustrated weekly under the editorship of Yankev Mestel and Sh. Y. Imber. In it Tshatshkes published articles on politics and medicine. After the war he wrote only for medical journals. From his youthful writings (in Polish), two offprints appeared—on Moses Hess and Leo Pinsker. Subsequent information about him remains lacking.
Source: Zalmen Reyzen, Leksikon, vol. 1.