Up to the Sky in Ships
A. Bertram Chandler
The Unsettled Dust
Robert Aickman
The Unpleasant Profession of Jonathan Hoag
Robert A. Heinlein
The Unorthodox Engineers
Colin Kapp
Unorthodox Engineers (1)
The Unicorn Trade
Poul Anderson & Karen Anderson
Unfinished Tales of Númenor and Middle-Earth
J. R. R. Tolkien
Middle Earth Universe (1)
Under the Sunset
Bram Stoker
Under the Jaguar Sun
Italo Calvino
The Undefeated
Keith Laumer
The Uncollected Cases of Solar Pons
Basil Copper
Solar Pons (11)