- Script:
- Gardner Fox
- Pencils:
- Mike Sekowsky
- Inks:
- Bernard Sachs
- Colors:
- ?
- Letters:
- Gaspar Saladino
- Genre:
- superhero
- Characters:
- Aquaman; The Atom [Ray Palmer]; Batman; The Flash [Barry Allen]; Green Arrow; Green Lantern [Hal Jordan]; Hawkman [Katar Hol]; Martian Manhunter [J'onn J'onzz]; Superman; Wonder Woman (all as the Justice League of America/JLA); Mirror Master; The Shark; The Penguin; Captain Cold; Andrew Helm (villain); Chung Ka; Chandro Gopar
- Synopsis:
- 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.
- Reprinted:
- in Justice League of America (DC, 1960 series) #115 (January-February 1975)
- in Justice League of America Archives, The (DC, 1992 series) #5
Lettering credit from reprint in JLA Archives. Credits for script, pencils and inks confirmed from Julius Schwartz's editorial records, provided by DC Comics (May 2007).
- Script:
- Julius Schwartz
- Pencils:
- Morris Waldinger
- Inks:
- Tom Nicolosi
- Colors:
- ?
- Letters:
- ?
Credits for script, pencils and inks confirmed from Julius Schwartz's editorial records, provided by DC Comics (May 2007).