| 0 | The Man in the Ion Mask! | cover | 1 | pencils: Gil Kane; inks: Murphy Anderson; colors: Jack Adler; letters: Ira Schnapp | The Atom [Ray Palmer]; Man in the Ion Mask |
| 1 | The Man in the Ion Mask! | comic story | 12.34 | script: Gardner Fox; pencils: Gil Kane; inks: Sid Greene; letters: Gaspar Saladino | The Atom [Ray Palmer]; Jean Loring; Ed Jameson; The Man in the Ion Mask [Bill Jameson] (villain) |
| 2 | - | promo (ad from the publisher) | 0.33 | script: E. Nelson Bridwell; letters: Ira Schnapp | |
| 4 | - | promo (ad from the publisher) | 0.5 | pencils: Curt Swan; inks: George Klein; letters: Ira Schnapp | |
| 5 | - | activity | 0.5 | script: Henry Boltinoff; pencils: Henry Boltinoff; inks: Henry Boltinoff; letters: Henry Boltinoff | |
| 6 | - | in-house column | 0.5 | letters: typeset | |
| 8 | Your Free Trip Around the World! | public service announcement | 1 | script: Jack Schiff; pencils: Sheldon Moldoff; inks: Sheldon Moldoff; letters: Ira Schnapp | an old sea captain; two boys |
| 9 | - | promo (ad from the publisher) | 0.33 | pencils: Joe Orlando; inks: Joe Orlando; letters: Ira Schnapp | |
| 10 | - | letters page | 1 | script: Julie Schwartz; pencils: Ira Schnapp; inks: Ira Schnapp | |
| 11 | The Spy Who Went Out for the Gold! | comic story | 10.67 | script: Gardner Fox; pencils: Gil Kane; inks: Sid Greene; letters: Gaspar Saladino | The Atom [Ray Palmer]; Agent 237X (villain); Boris Kalumchuk (villain); Jean Loring |
| 12 | - | promo (ad from the publisher) | 1 | script: E. Nelson Bridwell; pencils: Joe Orlando; inks: Joe Orlando; letters: Ira Schnapp | |
| 13 | - | promo (ad from the publisher) | 0.33 | script: E. Nelson Bridwell; pencils: Carmine Infantino; inks: Murphy Anderson; letters: Ira Schnapp | |