The Intellectual World of C. S. Lewis

C. S. Lewis -- A Life: Eccentric Genius, Reluctant Prophet

The Fellowship: The Literary Lives of the Inklings: J.R.R. Tolkien, C. S. Lewis, Owen Barfield, Charles Williams

A History of Western Philosophy and Theology

A Hobbit, a Wardrobe, and a Great War: How J.R.R. Tolkien and C.S. Lewis Rediscovered Faith, Friendship, and Heroism in the Cataclysm of 1914-1918

Making Sense of God: An Invitation to the Skeptical

Reading C.S. Lewis: A Commentary

The Day the Revolution Began: Reconsidering the Meaning of Jesus's Crucifixion

The Cambridge Companion to C. S. Lewis (Cambridge Companions to Religion)

The Discarded Image: An Introduction to Medieval and Renaissance Literature (Canto Classics)