| Issue | #231 |
| Published | May 1956 |
| Frequency | monthly |
| Cover Price | 0.10 USD |
| Pages | 36 |
| Editing | Whitney Ellsworth (credited); Jack Schiff (actual) |
| Characters | Batman [Bruce Wayne] (photo); Batman, Junior [John Vance] (photo); Robin [Dick Grayson] |
| Genre | superhero |
| Pencils | Curt Swan (see Notes this issue) |
| Inks | Stan Kaye |
| Notes | Joe Desris credits pencils on this cover to Sheldon Moldoff, however, art does appear to be Swan to a number of others, including noted art identifier, Craig Delich. |
| Characters | Batman [Bruce Wayne]; Robin [Dick Grayson]; Commissioner James Gordon (supporting); Birrell Binter (intro, villain); Batman, Junior [John Vance] (intro) |
| Synopsis | When Batman doesn't allow Robin to come with him on a case, he's hurt, but more so when he accidently discovers a photo of the Caped Crusader with a younger version of himself, taken years before there was a Robin, and that person, now a grown man, has returned to Gotham City. |
| Genre | superhero |
| Script | Edmond Hamilton |
| Pencils | Sheldon Moldoff [as Bob Kane] (signed) |
| Inks | Charles Paris |
| Notes | Synopsis added by Craig Delich 10-18-07. |
| Reprinted | In Batman (DC, 1940 series) #185 (October-November 1966) |
| Characters | Jerry the Jitterbug |
| Genre | gag |
| Script | Henry Boltinoff |
| Pencils | Henry Boltinoff |
| Inks | Henry Boltinoff |
| Letters | Henry Boltinoff |
| Characters | Superman |
| Genre | superhero |
| Script | Jack Schiff |
| Pencils | Winslow Mortimer |
| Inks | Winslow Mortimer |
| Letters | Ira Schnapp |
| Characters | Roy Raymond; Karen (supporting); Professor Abner Bean; Harvey Crow (villain) |
| Genre | detective |
| Pencils | Ruben Moreira (signed) |
| Inks | Ruben Moreira (signed) |
| Genre | humor |
| Script | Henry Boltinoff |
| Pencils | Henry Boltinoff |
| Inks | Henry Boltinoff |
| Letters | Henry Boltinoff |
| Genre | crime |
| Script | Jack Miller [as Jed Maxwell] |
| Pencils | ? (illustration) |
| Inks | ? (illustration) |
| Colors | ? (illustration) |
| Letters | typeset |
| Characters | Martian Manhunter [J'onn J'onzz; John Jones] (origin); unnamed Martian criminal (intro, villain); Professor Erdel (cameo, flashback) |
| Synopsis | An unnamed criminal escapes from Mars and lands on Earth. He offers Jones his Guard Belt which can transport him back to Mars, but Jones refuses because the criminal would escape. |
| Genre | superhero |
| Script | George Kashdan ? |
| Pencils | Joe Certa |
| Inks | Joe Certa |
| Notes | writer id by Bob Hughes 6/09. Jones uses telescopic Martian eyesight and super-hearing. The Martian villain uses super-strength. |
| Reprinted | in Showcase Presents Martian Manhunter (DC, 2007 series) #1 |
| Characters | Casey the Cop |
| Genre | gag |
| Script | Henry Boltinoff |
| Pencils | Henry Boltinoff |
| Inks | Henry Boltinoff |
| Letters | Henry Boltinoff |