"That Lewis and Sayers had much in common and that their lives intersected in a number of interesting ways throughout their careers is common knowledge for even the casual follower of either author. What does not seem to have been appreciated or explained sufficiently in the scholarship to date is the nature of the friendship between these two influential Christian authors. Therefore, it is this friendship we wish to shed light on, using as our primary source the correspondence between Lewis and Sayers from 1942-1957. In addition, we look at what the biographers of each author have to say about their relationship."
Simmons, Laura K. and Tandy, Gary L., "Books, Theology, and Hens: the Correspondence and Friendship of C. S. Lewis and Dorothy L. Sayers" (2016). Faculty Publications - Department of English. 56.