Which organization did J.R.R. Tolkien help establish with C.S. Lewis at Oxford?

J.R.R. Tolkien helped establish the literary discussion group known as the Inklings with C.S. Lewis at Oxford.

The Inklings were an informal group of writers and academics who met mainly in Oxford during the 1930s and 1940s. Members read sections of works in progress aloud and discussed literature, mythology, religion, and language. Tolkien and Lewis were among the group’s most prominent participants.

The meetings were associated with rooms at Magdalen College and with the Eagle and Child pub, which members nicknamed the Bird and Baby. Charles Williams and Owen Barfield were also important members, while the group included other Oxford figures at different times.

The Inklings were not a formal society with a founding charter or membership register. That is why the group is sometimes mistakenly compared with organized political or artistic movements. Its importance came from conversation and mutual criticism. Tolkien read parts of The Lord of the Rings to fellow Inklings while the long project was being written.