Useful article about the relationship between Bordiga and Gramsci and the stalinisation of the Italian workers' movement.
This text by John Chiaradia was taken from Loren Goldner's website (see his intro below) and extensively cleaned up and put into PDF and eBook formats because I think it deserves to take its place in the corpus of material about Bordiga that's on libcom.
The first volume of International Council Correspondence (English Edition)
THE ORIGINS OF THE GERMAN COMMUNIST LEFT
The political indecision of the party during the war and in the Revolution of November 1918
The birth of the Comintern in March 1919
THE BUILDING UP OF THE K.A.P.D
The split at the Heidelberg congress
The birth of the K.A.P.D.: the Ruhr uprising
The activity of the party. The Program
A detailed historical account and political analysis of the treaty that marked the official conclusion of the First World War on the Eastern Front, in which the author stridently advocates the position of the “left communists” who opposed the treaty and instead called for international revolutionary war, with extensive discussion of the connection between the opposing views on this question in the Bolshevik Party and crucial domestic controversies concerning revolutionary social organization and economic policy.
A manifesto written and presented in Spring 1981 by For the Workers' Opposition, a small group of anarchists and council communists from Chicago, IL inspired by the German/Dutch communist left.
Eduard Martynovich Dune, a member of the opposition group "Democratic centralism". For his opposition activities he was arrested and spent many years in Vorkuta. Fled during the Second World war. Analysis made in 1947 for the Menshevik émigré organ "Socialističeskij Vestnik". Died in 1953. Source: Archive of L.D. Trotsky, vol. 2 ; Chernyavskiy, Felshtinsky.
Also see Dune's Notes of a Red Guard.