| Issue | #241 |
| Published | March-April 1973 |
| Cover Price | 0.20 |
| Pages | 36 |
| Editing | Julius Schwartz |
| Notes | Credits for pencils and inks confirmed from Julius Schwartz's editorial records, provided by DC Comics. [August 2007] |
| Genre | science fiction |
| Pencils | Nick Cardy |
| Inks | Nick Cardy |
| Notes | Credits for pencils and inks confirmed from Julius Schwartz's editorial records, provided by DC Comics. [August 2007] |
| Genre | science fiction |
| Script | Gardner Fox |
| Pencils | Carmine Infantino |
| Inks | Murphy Anderson |
| Notes | Credits for script, pencils and inks confirmed from Julius Schwartz's editorial records, provided by DC Comics. [August 2007] |
| Reprinted | from Mystery in Space (DC, 1951 series) #81 (February 1961) |