1973 cover art by Frank Kelly Freas for Pandora’s Planet, by Christopher Anvil
Ciruelo Cabral
Clyde Caldwell
Frank Kelly Freas
Fred Fields
Glen Orbik
Les Dorscheid
Les Edwards
Mark Zug
Roger Raupp
Sam Rakeland
Janny Wurts
John Howe
Henry Richard Van Dongen
Boris Vallejo
Esteban Maroto
Gray Morrow
Greg Hildebrandt,Tim Hildebrandt