The Unknown Wrestler
The Unknown Sea
The Unknown Quantity: A Book of Romance and Some Half-Told Tales
The Unknown
The Unknown Masterpiece
The Unknown Life of Jesus Christ
The Unknown Guest
The Unknown Eros
The University of Michigan
The University of Hard Knocks
The Universe — or Nothing
The Universe a Vast Electric Organism
The Universal Reciter
The Universal Copyright Convention (1988)
The Unity of Western Civilization
The United States Since the Civil War