| Issue | #12 |
| Published | September 1951 |
| Cover Price | 0.10 |
| Pages | 52 |
| Editing | Whitney Ellsworth (credited); Julius Schwartz (actual) |
| Genre | superhero |
| Pencils | Gil Kane |
| Inks | Gil Kane |
| Genre | superhero |
| Script | John Broome |
| Pencils | Murphy Anderson |
| Inks | Murphy Anderson |
| Notes | cover story |
| Genre | science fiction |
| Script | John Broome [as John Osgood] |
| Pencils | Alex Toth |
| Inks | Sy Barry |
| Notes | Credits for script, pencils and inks confirmed from Julius Schwartz's editorial records, provided by DC Comics (April 2007). |
| Reprinted | In From Beyond the Unknown #2 (December - January 1969-1970) |
| Genre | science fiction |
| Script | Jack Miller |
| Pencils | Mel Keefer |
| Inks | Bernard Sachs |
| Genre | science fiction |
| Script | Gardner Fox |
| Pencils | Carmine Infantino |
| Inks | Bernard Sachs |