- Script:
- Robert Kanigher
- Pencils:
- Dick Dillin
- Inks:
- Joe Giella
- Colors:
- ?
- Letters:
- John Costanza
- Job Number:
- S-494
- Genre:
- superhero
- Characters:
- Superman; Batman; Black Canary; The Atom [Ray Palmer]; The Flash [Barry Allen]; Hawkman [Katar Hol]; Professor Lars Hansun; Dr. Viktor Willard (villain); Nether Man (villain); Phyllis Temple; aborigines; Iris Allen (cameo)
Credits for script, pencils and inks confirmed from Julius Schwartz's editorial records, provided by DC Comics (May 2007).
- Script:
- Gardner Fox
- Pencils:
- Murphy Anderson
- Inks:
- Murphy Anderson
- Colors:
- ?
- Letters:
- ?
- Job Number:
- S-564
- Genre:
- Science Fiction
- Reprinted:
- from Strange Adventures (DC, 1950 series) #30 (March 1953)
Credits for script, pencils and inks confirmed from Julius Schwartz's editorial records, provided by DC Comics. [July 2007].