| Issue | #315 |
| Published | December 1963 |
| Cover Price | 0.12 USD |
| Pages | 36 |
| Editing | Mort Weisinger |
| Notes | Smallville Mailsack contains a letter from E. Nelson Bridwell. End of original Superboy stories this issue |
| Characters | Superboy; Clark Kent; Lana Lang |
| Genre | superhero |
| Pencils | Curt Swan |
| Inks | George Klein |
| Letters | Ira Schnapp |
| Characters | Legion of Super-Heroes [Superboy; Saturn Girl; Bouncing Boy; Sun Boy; Brainiac 5; Lightning Lad; Cosmic Boy; Chameleon Boy]; Legion of Substitute-Heroes [Night Girl; Stone Boy; Fire Lad; Chlorophyll Kid; Polar Boy] |
| Synopsis | The Legion of Super-Heroes finds out about the Subs, and hold a contest to induct the winner into the Legion of Super-Heroes. |
| Genre | superhero |
| Script | Edmond Hamilton |
| Pencils | John Forte |
| Inks | John Forte |
| Letters | Joe Letterese (splash only); ? |
| Editing | Mort Weisinger |
| Notes | Legion of Substitute Heroes app. Bouncing Boy misidentified as Bouncing Girl in Roll Call |
| Reprinted | in Adventure Comics (DC, 1938 series) #501; in Legion of Super-Heroes Archives, The (DC, 1991 series) #2 |
| Characters | an old sea captain; two boys |
| Synopsis | The public library can take its patrons on journeys around the world and beyond, as shown by the captain after telling the boys some tales. |
| Genre | fact |
| Script | Jack Schiff |
| Pencils | Sheldon Moldoff |
| Inks | Sheldon Moldoff |
| Letters | Ira Schnapp |
| Notes | A list by Lionel English also gives the penciller and inker as "Morris Waldinger" in one of the issues this PSA appears in. Creator credits from a list by Lionel English. |
| Reprinted | in June 1966 DC titles |
| Characters | Legion of Super-Heroes [Superboy; Saturn Girl, Bouncing Boy; Lightning Lad; Sun Boy; Brainiac 5; Chameleon Boy]; Legion of Substitute-Heroes [Night Girl; Stone Boy; Fire Lad; Chlorophyll Kid; Polar Boy] |
| Synopsis | Stone Boy wins the contest, but decides to stay with the Subs. |
| Genre | superhero |
| Script | Edmond Hamilton |
| Pencils | John Forte |
| Inks | John Forte |
| Letters | Joe Letterese |
| Editing | Mort Weisinger |
| Notes | Legion of Substitute Heroes app. |
| Reprinted | in Adventure Comics (DC, 1938 series) #501; in Legion of Super-Heroes Archives, The (DC, 1991 series) #2 |
| Notes | Includes a letter from E. Nelson Bridwell |
| Characters | Superboy; Jonathan Kent; Martha Kent; Lana Lang; Pete Ross; Colossal Boy; red kryptonite |
| Synopsis | Red K makes Superboy giant size |
| Genre | superhero |
| Script | ?; Mort Weisinger |
| Pencils | George Papp |
| Inks | George Papp |
| Letters | Joe Letterese |
| Editing | Mort Weisinger |
| Notes | last new Superboy story in Adventure Comics during the Legion's run |