Which Tolkien work is an unfinished time-travel story involving the fictional Notion Club?

The Notion Club Papers is Tolkien’s unfinished time-travel story involving the fictional Notion Club.

Tolkien worked on The Notion Club Papers in the 1940s, but he abandoned the project before completing it. The surviving text presents discussions and papers connected with an Oxford literary society, while also linking its ideas to dreams, language, Atlantis, and journeys across time.

The work is notable because it overlaps with themes Tolkien explored elsewhere, especially the lost island of Númenor and the legend of its destruction. Its fictional documents and scholarly tone also show how Tolkien blended invented history with the appearance of real academic research.

Readers sometimes confuse it with The Lost Road, another unfinished time-travel project associated with Tolkien’s Númenórean mythology. The Lost Road was written earlier, while The Notion Club Papers uses the fictional club as its central framework.