| Unknown Mexico, Volume 1 (of 2) / A Record of Five Years' Exploration Among the Tribes of the Western Sierra Madre; In the Tierra Caliente of Tepic and Jalisco; and Among the Tarascos of Michoacan
Carl Lumholtz | |
| Unknown to History: A Story of the Captivity of Mary of Scotland
Charlotte M. Yonge | |
| Unleavened Bread
Robert Grant | |
| Unlucky: A Fragment of a Girl's Life
Caroline Austin | |
| Unmanned
Stephen Oliver | |
| Unnatural death
Dorothy L. Sayers | |
| Unnoticed London
Elizabeth Montizambert | |
| Unparliamentary papers and other diversions
Reginald Berkeley | |
| Unpopular government in the United States
Albert Martin Kales | |
| Unravelled Knots
Baroness Emmuska Orczy Orczy |
