| Issue | #66 |
| Published | October 1961 |
| Frequency | monthly |
| Cover Price | 0.10 USD |
| Pages | 36 |
| Editing | Jack Schiff; Murray Boltinoff (Associate Editor); George Kashdan (Associate Editor) |
| Characters | Space Ranger; Dr. Elektro |
| Genre | science fiction; superhero |
| Pencils | Bob Brown |
| Inks | Bob Brown |
| Letters | Ira Schnapp |
| Genre | science fiction |
| Pencils | Mort Meskin |
| Inks | George Roussos |
| Characters | Atom [Ray Palmer]; Kulan Dar |
| Genre | superhero |
| Pencils | Gil Kane |
| Inks | Murphy Anderson |
| Letters | Ira Schnapp |
| Notes | House ad for Showcase #34 (September-October 1961), featuring the Atom's first Silver Age appearance. |
| Synopsis | Bobby dreams about the fantastic future that robots will provide, but the robot in his dream reminds him that humans will always be needed too. |
| Script | Jack Schiff |
| Pencils | Bernard Baily |
| Inks | Bernard Baily |
| Letters | Ira Schnapp |
| Notes | Published in cooperation with the National Social Welfare Assembly. |
| Genre | science fiction |
| Pencils | Bill Ely |
| Inks | Bill Ely |
| Genre | science fiction |
| Letters | typeset |
| Characters | Space Ranger; Myra Mason; Cryll; Dr. Elektro (introduction) |
| Synopsis | Space Ranger's crew disguise themselves to lure Dr. Elektro and his gang of phantom raiders into attacking their ship. |
| Genre | science fiction; superhero |
| Script | Arnold Drake |
| Pencils | Bob Brown |
| Inks | Bob Brown |
| Notes | writer identification by Bob Hughes |