(AP Photo) In this Dec. 12, 1974 file photo, Soviet dissident Aleksandr Solzhenitsyn at a press conference at the Grand Hotel in Stockholm. Solzhenitsyn was central in exposing the horrors of Soviet slave labor camps from his own experiences through works such as "One Day in the Life of Ivan Denisovich." The Swedish Academy awarded him the Nobel Prize in Literature in 1970, "for the ethical force with which he has pursued the indispensable traditions of Russian literature." Solzhenitsyn decided not to leave the Soviet Union to receive his prize, fearing authorities wouldn't let him back. He accepted the award four years later after he was exiled from the Soviet Union. This year's winner is due to be announced on Thursday, Oct. 5, 2017.