Ullr Uprising
H. Beam Piper
Federation (1)
Uller Uprising
Ulalume
Edgar Allan Poe
The Universe Beneath Our Feet
Carl Frederick
Uhura's Song
Janet Kagan
Star Trek: The Original Series (21)
Uh-Oh City
Jonathan Carroll
The Ugly Little Boy
Isaac Asimov & Robert Silverberg
The Ugly Chickens
Howard Waldrop
Uglies
Scott Westerfeld
Uglies (1)
Uganda
Lavie Tidhar
The UFO Experience: A Scientific Inquiry
J. Allen Hynek
Gerry Anderson's UFO 2
John Burke
Gerry Anderson's UFO
Ubik
Philip K. Dick
Dark Ages: Tzimisce
Myranda Kalis
Dark Ages Clan (13)
The Tyrant
Eric Flint & David Drake
General / Raj Whitehall (8)
Tyrant's Test
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Star Wars: Black Fleet Crisis (3)
Tyrant's Blood
Fiona McIntosh
Valisar (2)
Tyrant Moon
Elaine Corvidae
Tyrant Moon (1)