Justice League of America Vol.1 #40
Andrew Helm creates a machine intended to create world peace, but which malfunctions and causes evil; The JLA traces the source of the mayhem, battles illusory creatures summoned from their subconscious minds, and turns off the malfunctioning machine.
First Printing: Nov 1965
Writers: Gardner Fox
Art: Mike Sekowsky and Bernard Sachs
Cover: Mike Sekowsky and Murphy Anderson