I cannot identify any of the people in the picture, but I think it is the Bogrim group of Hashomer Hatzair. This is the oldest group. The photo was taken in Bitola in the 1930s.
Here they are pictured in front of the ken building in Bitola. In this building there was a gan jeladim. We gathered here, had lectures. The building had a yard where we played. There was a big hall inside.
Bogrim group of the Hashomer Hatzair in Bitola
The Centropa Collection at USHMM
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