Try and Change the Past
Fritz Leiber
Change War (1)
Tunnel Through Time
Lester Del Rey & Paul W. Fairman
Tyrannosaurus Rex
J. F. Rivkin
Age of Dinosaurs (1)
The Ultimate Bike Path
Mike Sirota
Bicycling Through Space and Time (2)
The Ultimate Wave
Terry Denton
Storymaze (1)
Unborn Tomorrow
Mack Reynolds
Up the Line
Robert Silverberg
Veils of Time
Lynn Kurland & Angie Ray & Ingrid Weaver & Maggie Shayne
The Very Thought of You
Lynn Kurland
MacLeod Family (2)
Virtual Evil
Jana G. Oliver
Time Rovers (2)
Wagers of Sin
Robert Asprin & Linda Evans
Time Scout (2)
Walking on the Moon
Susan Sizemore
Warrior
William F. Wu
Isaac Asimov's Robots in Time (3)
The Weapon Shops of Isher
A. E. Van Vogt
Weapon Shops of Isher (2)
Wet & Wild
Sandra Hill
Viking (Series II) (4)
What, No Roses?
Marianne Mancusi
When Destiny Calls
Suzanne Elizabeth
When I Fall in Love
de Piaget Family (4)