- Elliot S. Maggin; ? (översättning)
- Neal Adams
- Dick Giordano (page 1, pages 3 to 13)
- Julius Schwartz (original editor)
- Gröna pilen [Green Arrow]; Dinah Drake Lance [Svarta Fågeln]; Bruce Wayne [Läderlappen] [Batman]; Hal Jordan [Gröna Lyktan] [Green Lantern]; Clark Kent [Stålmannen] [Superman]
Credits for script, pencils and inks confirmed from Julius Schwartz's editorial records, provided by DC Comics. This is Maggin's first professional script.
The splash page (page 2) is shot directly from Neal Adams's pencils as he handed it in too late for inking. (Source: Man of Two Worlds by Julius Schwartz and Brian M. Thomsen, page 128).