Excerpts from Books and Wikipedia
"The Gulag Archipelago: An Experiment in Literary Investigation (Russian: ????????? ?????, Arkhipelag GULAG)Note 1 is a three-volume non-fiction text written between 1958 and 1968 by Russian writer and Soviet dissident Aleksandr Solzhenitsyn. It was first published in 1973, and translated into English and French the following year. It covers life in what is often known as the Gulag, the Soviet forced labour camp system, through a narrative constructed from various sources including reports, interviews, statements, diaries, legal documents, and Solzhenitsyn's own experience as a Gulag prisoner." [Wikipedia]