Reading with the heart: The way into Narnia

Reason and Imagination in C. S. Lewis: A Study of Till We Have Faces

The Lion's World: A Journey into the Heart of Narnia

C. S. Lewis's Case for Christ: Insights from Reason, Imagination and Faith

Companion to Narnia, Revised Edition: A Complete Guide to the Magical World of C.S. Lewis's The Chronicles of Narnia

The Quotable Lewis

Bandersnatch: C.S. Lewis, J.R.R. Tolkien, and the Creative Collaboration of the Inklings

The Narnia Code

A Preface to Paradise Lost

The Pilgrim's Regress: The Wade Annotated Edition

C. S. Lewis and His Circle: Essays and Memoirs from the Oxford C.S. Lewis Society