Lenin: 1905/3rdcong: Speech on the Qualifiedness of the Kazan and Kuban Committees https://www.marxists.org/archive/lenin/works/1905/3rdcong/2.htm
Economic Manuscripts: Grundrisse: Footnotes for p 601 to 650 http://hiaw.org/defcon6/works/1857/grundrisse/f601-650.html
Marx Engels Archive of the Comintern (SH) http://ciml.250x.com/archive/marx_engels/english/marx_engels_complete_works_volume1-50/marx_engels_complete_works_volume1-50_copy_of_our_former_georgian_website.html