Lenin: Theses of a Report Made at the St. Petersburg City Conference of July 8 on the Attitude of the Social-Democratic Labour Party to the Third Duma https://www.marxists.org/archive/lenin/works/1907/jul/00.htm
Comintern Archive revolutionary literature http://ciml.250x.com/archive/literature/english/brecht_socialist_realism_1987_english.html