Mere Christianity
Lewis, C.S.
Narnia 1 - The Lion, The Witch and The Wardrobe
Narnia 2 - Prince Caspian
Narnia 3 - The Voyage of the Dawn Treader
Narnia 4 - The Silver Chair
Narnia 5 - The Horse and His Boy
Narnia 6 - The Magician's Nephew
Narnia 7 - The Last Battle
The Screwtape Letters
Space Trilogy 1 - Out Of The Silent Planet
Space Trilogy 2 - Perelandra
Space Trilogy 3 - That Hideous Strength