| Issue | #25 |
| Published | June-July 1966 |
| Frequency | Bi-Monthly |
| Cover Price | 0.12 USD |
| Pages | 36 |
| Editing | Julius Schwartz |
| Characters | The Atom [Ray Palmer]; Man in the Ion Mask |
| Genre | superhero |
| Pencils | Gil Kane |
| Inks | Murphy Anderson |
| Characters | The Atom [Ray Palmer]; Jean Loring; Ed Jameson; The Man in the Ion Mask (villain) |
| Genre | superhero |
| Script | Gardner Fox |
| Pencils | Gil Kane |
| Inks | Sid Greene |
| Notes | Fox adopts a camp writing style through issue #28. Credits for script, pencils and inks confirmed from Julius Schwartz's editorial records, provided by DC Comics. Pages 6 and 13 also 1/3 each filled with promotional advertisements. |
| Genre | Humor |
| Notes | Follows page 6 of sequence 1. |
| Characters | AMT Kat |
| Genre | fact |
| Script | Henry Boltinoff (signed) |
| Pencils | Henry Boltinoff (signed) |
| Inks | Henry Boltinoff (signed) |
| Letters | Typeset |
| Characters | Rocky; Bullwinkle |
| Genre | funny animals |
| Script | Bill Williams? [as W.] |
| Pencils | Bill Williams [as W.] |
| Inks | Bill Williams [as W.] |
| Characters | an old sea captain; two boys |
| Synopsis | After telling the boys some tales, the captain takes them to the library where they can travel anywhere just by reading. |
| Genre | fact |
| Script | Jack Schiff |
| Pencils | Sheldon Moldoff |
| Inks | Sheldon Moldoff |
| Letters | Ira Schnapp |
| Script | Julius Schwartz [as The Editor] |
| Letters | Typeset |
| Notes | Letters of comment from readers Bob Butts, Marshall Lanz, John F. Lebar and Sal Iacopelli, with replies from Schwartz. |
| Characters | The Atom [Ray Palmer]; Agent 237X (villain); Boris Kalumchuk (villain); Jean Loring |
| Genre | superhero |
| Script | Gardner Fox |
| Pencils | Gil Kane |
| Inks | Sid Greene |
| Notes | Credits for script, pencils and inks confirmed from Julius Schwartz's editorial records, provided by DC Comics. |