Showcase (1956-) #15

“THE GREAT PLUTONIUM PLOT.” A renegade scientist is stealing all the plutonium in the galaxy. He hopes to rule the solar system with his "Teleportator," but needs the radioactive element to power it. Unfortunately for him, he must go through Space Ranger to get it. Plus, “THE ROBOT PLANET.”

Written By:
Gardner Fox, Edmond Hamilton
Pencils:
Jack Kirby, Bob Brown
Inks:
Jack Kirby, Bob Brown
Cover By:
Bob Brown