1905-1911 member, Main Board, Social-Democratic Party of Poland and Lithuania 1910-1911 secretary. Main Board, Social-Democratic Party of Poland and Lithuania Represented Social-Democratic Party of Poland and Lith on ed staff of Russian Social-Democratic Workers’ Party ccntr organ “Sotsial-Demokrat”.
Member, Foreign Organization(s) Commission and Technical Commission. Supported the conciliationist Stand against the Bolsheviks. 1919-1920 avtive in Communist Workers’ Party of Poland.
From 1921 executive Comitern and Trade-Union International. Arrested by State Security organs.
Member, Social-Democratic Party of Poland and Lith from 1900.