| The Uncommercial Traveller
Charles Dickens | |
| The unconscious
Morton Prince | |
| The Unconstitutionality of Slavery
Lysander Spooner | |
| The Uncrowned King
Harold Bell Wright | |
| The Undamned
George O. Smith | |
| The Undefeated
J. C. Snaith | |
| The Under Dog
Francis Hopkinson Smith | |
| The Undercurrent
Robert Grant | |
| The Underdogs: A Novel of the Mexican Revolution
Mariano Azuela | |
| The Underground City; Or, The Black Indies / (Sometimes Called The Child of the Cavern)
Jules Verne |
