- Script:
- Gardner Fox
- Pencils:
- Mike Sekowsky
- Inks:
- Bernard Sachs
- Colors:
- ?
- Letters:
- Gaspar Saladino
- Genre:
- superhero
- Characters:
- Aquaman; The Atom [Ray Palmer]; The Flash [Barry Allen]; Green Arrow [Oliver Queen, of Earth-1]; Green Lantern [Hal Jordan]; Martian Manhunter [John Jones/J'onn J'onzz]; Batman [or Earth-1]; Superman [of Earth-1]; Wonder Woman [of Earth-1] (all as the Justice League of America/JLA); The Atom [Al Pratt]; Black Canary [Dinah Lance, of Earth-2]; Dr. Fate [Kent Nelson, of Earth-2]; The Flash [Jay Garrick]; Green Lantern [Alan Scott]; Hawkman [Carter Hall, of Earth-2]; Hourman [Rex Tyler] (all as the Justice Society of America/JSA); Felix Faust; Dr. Alchemy; Chronos; The Wizard; The Fiddler; The Icicle (all as the Crime Champions)
- Synopsis:
- 3 villains each from Earth-1 and Earth-2 hatch a plot to commit crimes, then hide out on the other Earth. To ensure their success, the villains of Earth-1 mystically trap the JLA in their headquarters. But the JLA summons the JSA and switches places with them.
- Reprints: show reprint note before migration (migrated reprint links need inspection)
1st JLA-JSA Team up. Story continued in Justice League of America #22. Lettering credit from reprint in JLA Archives.