| Issue | #307 |
| Published | April 1963 |
| Cover Price | 0.12 |
| Pages | 36 |
| Editing | Mort Weisinger |
| Notes | "Bits of Legionnaire Business" introduced in Smallville Mailbag (based on reader suggestion in earlier letter column) |
| Characters | Element Lad [as Mystery Lad]; Legion of Super-Heroes [Sun Boy; Bouncing Boy; Saturn Girl]; Superboy; Bizarro |
| Genre | superhero |
| Pencils | Curt Swan |
| Inks | George Klein |
| Letters | Ira Schnapp |
| Notes | "Bits of Legionnaire Business" introduced in Smallville Mailbag (based on reader suggestion in earlier letter column) |
| Reprinted | in Legion of Super-Heroes Archives, The (DC, 1991 series) #2 |
| Characters | Superboy, Lana Lang, the Langs, the Kents, Chief Parker |
| Synopsis | Lana tries to prove Clark is Superboy |
| Genre | superhero |
| Pencils | George Papp |
| Inks | George Papp |
| Letters | Joe Letterese |
| Editing | Mort Weisinger |
| Characters | Legion of Super-Heroes [Cosmic Boy; Saturn Girl; Bouncing Boy; Sun Boy; Brainiac 5; Invisible Kid; Colossal Boy]; Element Lad [as Mystery Lad]; Roxxas |
| Synopsis | The Legion takes in new member Mystery Lad on Saturn Girl's word and he helps them put an end to space pirate Roxxas. |
| Genre | superhero |
| Script | Edmond Hamilton |
| Pencils | John Forte |
| Inks | John Forte |
| Letters | Joe Letterese |
| Editing | Mort Weisinger |
| Notes | Intro, origin Element Lad, who joins |
| Reprinted | in Adventure Comics (DC, 1938 series) #500; in Legion of Super-Heroes Archives, The (DC, 1991 series) #2 |
| Characters | Casey the Cop |
| Synopsis | Casey tries to cite a litterer. |
| Genre | gag |
| Script | Henry Boltinoff |
| Pencils | Henry Boltinoff |
| Inks | Henry Boltinoff |
| Letters | Henry Boltinoff |