TCG Letter #188

Willink though had offered the chair elsewhere before receiving a letter from Lewis accepting the post.

Quoted by Brian Barbour in "Lewis and Cambridge", Modern Philology 96, no. 4.

A shorter extract was published in The Collected Letters of C.S. Lewis: Narnia, Cambridge, and Joy 1950-1963.

tolkiengateway.com mention that the version found in Lewis's volume of letters is a shorter edited version. While it is shorter due to formatting, it is not edited differently.