The War for Middle-earth: J.R.R. Tolkien and C.S. Lewis Confront the Gathering Storm, 1933–1945

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 1914-18

The Searchers: A Quest for Faith in the Valley of Doubt