JET POWERS - CAPTAIN OF SCIENCE “This is JET POWERS – captain of science, master of the atoms and molecules that make up the world we live in! His genius reflects itself in myriad ways, but always it is directed against the forces of evil that seek to wrest mankind from the paths of peace and plenty! SPACE ACE “The danger spots of space are many and varied. A man can lose his life in a portside tavern or out in the black reaches of outer space – gambling his existence for a fortune worth a planet! This was the way death came and grinned at SPACE ACE, the ran the gauntlet of a spray of explosirays to find The Nothing Weapon!” PLUS JON LINTON: A 2000 MAN IN THE 1940S!