3 books in series

Oeuvres complètes (Soljénitsyne)

Oeuvres complètes (Soljénitsyne) is a 3-book series with 3 released primary works first released in 1973 with contributions by Aleksandr Solzhenitsyn, Thomas P. Whitney, and H.T. Willetts.

The Gulag Archipelago, 1918-1956: An Experiment in Literary Investigation, books I-II
The Gulag Archipelago: An Experiment in Literary Investigation, Volume 2
The Gulag Archipelago, 1918-1956: An Experiment in Literary Investigation, Volume 3