Triplanetary
E.E. "Doc" Smith
Lensman (1)
George R.R. Martin's Doorways
George R.R. Martin
Battleship Indomitable
David VanDyke
Galactic Liberation (2)
The Number of the Beast: A Parallel Novel About Parallel Universes
Robert A. Heinlein
The World As Myth (2)
Archangel Rising
Evan Currie
Archangel One (2)