Space Family Stone
Robert A. Heinlein
The Space Pioneers
Carey Rockwell
Tom Corbett Space Cadet (4)
The Spell of Undoing
Paul Collins
Quest of the Lost City (1)
Spirit Walker
Michelle Paver
Chronicles of Ancient Darkness (2)
Sprockets: A Little Robot
Alexander Key
Sprockets (1)
Stand by for Mars!
Tom Corbett Space Cadet (1)
The Star Beast
The Star Dwellers
James Blish
Heart Stars (1)
The Star Ghost
Brad Strickland
Star Trek Deep Space Nine Young Adult (1)
Star Trek II: Distress Call
William Rotsler
Star Trek Universe (1)
Starman Jones
Starship Through Space
G. Harry Stine
Starswarm
Jerry Pournelle
Jupiter (5)
Steel Magic
Andre Norton
Magic (Andre Norton) (1)
Still More Tales for the Midnight Hour
J. B. Stamper
Midnight Hour (4)
The Stone Light
Kai Meyer
Dark Reflections (2)
The Stonewalkers
Vivien Alcock