- Denny O'Neil
- Dick Dillin
- Joe Giella
- John Costanza ?
- Job Number:
- Justice League of America [Green Lantern [Hal Jordan]; Superman [Clark Kent; Kal-El]; Batman [Bruce Wayne]; Hawkman [Katar Hol]; The Flash [Barry Allen]; The Atom [Ray Palmer]; Green Arrow [Oliver Queen]; Black Canary]( all Earth-1)]; Crime Syndicate [Owlman (flashback); Superwoman (flashback)]; Justice Society of America [Hourman [Rex Tyler]; Green Lantern [Alan Scott]; Starman [Ted Knight]; Dr. Fate [Kent Nelson; Nabu]; Wonder Woman [Diana Prince Trevor](cameo); The Atom [Al Pratt] (cameo); Robin [Dick Grayson](cameo); Sandman [Wesley Dodds](cameo); Dr. Mid-Nite [Charles McNider]; Hawkman [Carter Hall]; The Spectre [Jim Corrigan]; The Flash [Jay Garrick]; Wildcat [Ted Grant]; Superman [Clark Kent; Kal-L]; Batman [Bruce Wayne] (intro; cameo); Johnny Thunder (cameo); Mr. Terrific (cameo);Red Tornado [John Smith]]; Jimmy Olsen (cameo); Creator2 (villain)
- A new menace threatens both Earths 1 and 2 as Red Tornado is captured by a foe known only as Creator2. Using his unique vibrational energies, Creator2 targets both the JSA and JLA separately, as each world's doppelganger falls prey to Creator2's traps. To be continued...
Credits for script, pencils and inks confirmed from Julius Schwartz's editorial records, provided by DC Comics (May 2007).
Introduction of Golden Age Batman for Earth-2.
Strange thing of note, although the Earth-2 Batman was introduced as a cameo, for some reason Dr. Mid-Nite was targeted instead by the writer for this story as being the Earth-1 Batman's closest doppelganger equivalent.
- Julius Schwartz
- Mike Sekowsky (logo illustration)
- Bernard Sachs (logo illustration)
- ? (logo illustration)
- Job Number:
letters submitted by Don McGregor; Scott Gibson; Steve Grabinsky; Martin Pasko; Jeff Ristine; R. L. Thomas; Peter J. Towne