Which 1936 book by C.S. Lewis examined allegory in medieval and Renaissance literature?

The 1936 book by C.S. Lewis that examined allegory in medieval and Renaissance literature was The Allegory of Love.

The Allegory of Love: A Study in Medieval Tradition is a scholarly work about the development of allegorical ideas, especially the literary representation of love. Lewis examines writers and traditions from classical and medieval literature, including courtly love and works associated with Edmund Spenser.

The book helped establish Lewis’s reputation as a serious literary scholar before his popular fame as a Christian writer and children’s novelist. Its approach connects literary history with intellectual and cultural change rather than treating poems as isolated texts.

Lewis’s later academic books included The Discarded Image, which studied the medieval and Renaissance model of the universe, and English Literature in the Sixteenth Century. Those titles are sometimes confused with The Allegory of Love because all three concern historical literature and ideas.