Abstract:

Yosef Kaplan was one of the leaders of the Jewish underground in the Warsaw ghetto, and an important member of Hechalutz and Hashomer Hatzair. Eyewitness accounts, articles, and documents describe his home and childhood, his involvement in the youth movement of Hashomer Hatzair in Kalisz, Poland, and his work as a member of the executive committee in Warsaw.

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