The Vampire-Men Of Neptune

Planet Comics #18

Battling Mordas Krad’s Fiends To Save The Floating Citadel’s Lovely Princess


Invasion Of The Cyclops-Men Of Mars

Planet Comics #7

Who apparently have at least two eyes…


The Fire-Eaters Of Asteroid Z

Planet Comics #27

Gale Allen And The Girl Squadron Invade the smoking world of cave monsters


Giant Killer Of Jupiter

Planet Comics #11


Monsters Of The Inner-World

Planet Comics #19

Reef Ryan Blasts The Flesh-Hungry Spidermen To Reach Neptune’s Hidden Paradise


Raiders From The Red Moon

Planet Comics #24 thumbnail
Planet Comics #24, page 45 thumbnail
Planet Comics #24
Planet Comics #24, page 45

Flint Baker Rallies His Amazon Sky-Troops To Stem An Unholy Invasion

This cover looks a bit familiar…

via via