Given name: Józef Family name: Sak (3)

(1)

Activist of Poale Zion-Right. Lived with the Majer family at Leszno Street No. 36. Founder and one of the headmasters of underground Dror gymnasium (junior high school). Member of the leadership of the Anti-fascist block, editor of 'Der Ruf'. After crossing to the 'Aryan side', he co-operated with the Jewish National Committee (ZKN). After the war, he settled in Israel.

(2)

A junior high school teacher. In the ghetto he was the leader of the Szulkult (Association for Schooling and Culture), which organised Yiddish schools with significant Hebrew elements. He taught in a clandestine Hebrew junior high school. He was a member of the editorial board in a magazine of the anti-fascist block.

(3)

A junior high school teacher. He was a member of the party Poale Zion-Right. He was in the ghetto. Later, he hid on the 'Aryan side'. After Ringelblum's death, he moved with his family to the flat prepared for Ringelblum in Izabelin. They survived the war.

(3)

in the index, Josef's surname is written with a Z

(1) 93, 136, (2) 144,163, (3) s.209,210