The Notion Club Papers is an abandoned novel by J. R. R. Tolkien, written in 1945 and published posthumously in Sauron Defeated, the 9th volume of The History of Middle-earth. It is a time travel story, written while The Lord of the Rings was being developed. The Notion Club is a fictionalization of Tolkien's own such club, the Inklings. Tolkien's mechanism for the exploration of time is through lucid dreams. These allow club members to experience events as far back as the destruction of the Atlantis-like island of Númenor, as narrated in The Silmarillion.
The unfinished text of The Notion Club Papers runs for some 120 pages in Sauron Defeated, accompanied by 40 pages of Christopher Tolkien's commentary and notes, with examples of the pages hand-written by his father.[1]