Was a founder of the German branch of Ha-Poel Ha-Zair Read more about Was a founder of the German branch of Ha-Poel Ha-Zair
Participated committees of the 'Münchner Räterepublik' (Munich Soviet Republic) (1918) Read more about Participated committees of the 'Münchner Räterepublik' (Munich Soviet Republic) (1918)
Was a memmber of the KPD (Communist Party of Germany) in Berlin (n.d.) Read more about Was a memmber of the KPD (Communist Party of Germany) in Berlin (n.d.)
Had contact witz illegal socialist groups in Leipzig, Germany (1932-1935) Read more about Had contact witz illegal socialist groups in Leipzig, Germany (1932-1935)