Since 1983, I have worked with Mike Taber and a broad team of collaborators to publish in English major documents of revolutionary Marxist movement from 1907 to 1923, with a focus on the first five years of the Communist International. All of these volumes are available from Pathfinder Press and Haymarket Books.
Here are the volumes published so far:
- Lenin’s Struggle for a Revolutionary International
Documents, 1907-1916 The Preparatory Years.
New York: Pathfinder, 1984, 604 pages. - The German Revolution and the Debate on Soviet Power
Documents, 1918-1919: Preparing the Founding Congress
New York: Pathfinder, 1986, 687 pages. - Founding the Communist International
Proceedings and Documents of the First Congress, March 1919
New York: Pathfinder, 1987, 503 pages. - Workers of the World and Oppressed Peoples, Unite! (Volume 1)
Proceedings and Documents of the Second Congress of the Communist International, 1920
New York: Pathfinder, 1991, 632 pages. 
Proceedings and Documents of the Second Congress of the Communist International, 1920
New York: Pathfinder, 1991, 592 pages.- To See the Dawn!
Baku, 1920 First Congress of the Peoples of the East
New York: Pathfinder, 1993, 368 pages. - Toward the United Front
Proceedings of the Fourth Congress of the Communist International, 1922
Leiden: Brill, 2012; Chicago: Haymarket, 2013, 1310 pages. - To the Masses
Proceedings of the Third Congress of the Communist Internatinal, 1921
Leiden: Brill, 2015; Chicago: Haymarket, 2016, 1299 pages. - The Communist Movement at a Crossroads
Plenums of the Communist International’s Executive Committee, 1922-1923
Leiden: Brill, 2018; Chicago: Haymarket, 2019, 796 pages.
The first eight volumes are edited and translated by John Riddell. The Communist Movement at a Crossroads is edited by Mike Taber and translated by John Riddell.
A collection of reviews and interpretive studies is available on this website.