Tom Simpson:
Spartan Planet, paperback cover by John Conrad Berkey, 1969
Tom Simpson:
Hunter of Worlds, paperback cover by John Conrad Berkey, 1977
Tom Simpson:
Secret of the Sunless World, paperback cover by John Conrad Berkey, 1969
Tom Simpson:
Explosion on Board by John Conrad Berkey
Tom Simpson:
Red Limit Freeway, paperback cover by John Conrad Berkey, 1984
Tom Simpson:
The Peculiar Enigma by John Conrad Berkey, 1994
Tom Simpson:
Famous Monsters #125 (1976), cover by John Berkey
Tom Simpson:
The Defenders paperback cover, 1992 by John Berkey
Tom Simpson:
Doubled Spaceships, 1995 by John Berkey
Tom Simpson:
Demon 4 by John Conrad Berkey, 1986
Tom Simpson:
Up in Space by John Conrad Berkey
Tom Simpson:
Spaceship Among Planets by John Conrad Berkey
Tom Simpson:
Colonies in Space by John Conrad Berkey, 1978
Tom Simpson:
Lifeboat by John Conrad Berkey, 1972
Tom Simpson:
The Undefeated by John Conrad Berkey, 1974
Tom Simpson:
Instant Survey by John Conrad Berkey, 2002
Tom Simpson:
End of the Run by John Conrad Berkey, 2001
Tom Simpson:
Cathedral by John Conrad Berkey, 1990
Tom Simpson:
Of Moon and Stars by John Conrad Berkey, 1990
Tom Simpson:
Galactic Convoy, paperback cover by John Conrad Berkey, 1987
Tom Simpson:
Space Settlement, AMP Corporate commission by John Conrad Berkey, 1988
Tom Simpson:
Catastrophes!, paperback cover by John Conrad Berkey, 1981
Tom Simpson:
Autumn in Space by John Conrad Berkey, 1995
Tom Simpson:
Lightship by John Conrad Berkey, 1977
Tom Simpson:
Neptune Factor, concept art by John Conrad Berkey, 1973
Tom Simpson:
The Towering Inferno, concept art by John Conrad Berkey, 1974
Tom Simpson:
Chronicles of the Lensman, cover by John Conrad Berkey, 1995
Tom Simpson:
Relics, Both by John Conrad Berkey, 2000
Tom Simpson:
Viking Probe (Uranus) by John Conrad Berkey
Tom Simpson:
Glide Path by John Conrad Berkey, 1981
