| 0 | - | cover | 1 | pencils: Jack Kirby; inks: Joe Simon | The Defender [Don Stevens] |
| 1 | Big, All New Smashing Comic Book | promo (ad from the publisher) | 1 | letters: typeset | Human Torch [Jim Hammond]; Toro; Sub-Mariner [Namor]; Captain America [Steve Rogers]; Bucky Barnes; Black Marvel [Dan Lyons]; Angel [Tom Hallaway] |
| 2 | - | foreword, introduction, preface, afterword | 1 | script: Joe Simon, Jack Kirby; pencils: Joe Simon, Al Avison, Al Gabriele; inks: Joe Simon | The Defender [Don Stevens] (introduction) |
| 3 | The Hideous Dame Kackle | comic story | 18 | pencils: Al Avison, Charles Nicholas; inks: Charles Nicholas | The Defender [Don Stevens]; Rusty (introduction, Defender's sidekick); Sally Kean (introduction); Dame Kackle (villain, introduction) |
| 4 | Origin of the Whizzer | comic story | 6 | pencils: Al Avison; inks: Al Gabriele | The Whizzer [Bob Frank] (introduction, origin); Dr. Emil Frank [Bob's father] (introduction, death); Granno (villain, introduction) |
| 5 | The Spirits of Freedom | comic story | 10 | script: Phil Sturm; pencils: Syd Shores; inks: George Klein | Mr. Liberty [John Liberty] (introduction, origin); Herr Leader (villain, introduction); Adolf Hitler (villain, cameo); Paul Revere (as ghost); Ethan Allan (as ghost) |
| 6 | The Haunted Fireplace | text story | 2 | script: Arthur Cazeneuve; pencils: Arthur Cazeneuve; inks: Arthur Cazeneuve | Captain Hennigan; Gregory Stanton; Jamieson (villain) |
| 7 | The Tunnel That Led to Death | comic story | 9 | script: Basil Wolverton; pencils: Basil Wolverton, Charles Nicholas; inks: Basil Wolverton, Charles Nicholas | Rockman (introduction, origin); J. J. Gollings (introduction, death); Roffler (villain, introduction, death) |
| 8 | Captain America Wants You! | promo (ad from the publisher) | 1 | | Captain America [Steve Rogers]; Bucky Barnes |
| 9 | The Coming of the Young Avenger | comic story | 10 | pencils: Howard Purcell; inks: Howard Purcell | Young Avenger [Bill Bryan; Bill Bryon] (introduction); Eric von Himmel (villain, introduction) |
| 10 | They Know What They Want! | promo (ad from the publisher) | 1 | | Human Torch [Jim Hammond]; Toro; Sub-Mariner [Namor]; Captain America [Steve Rogers]; Thunderer [Jerry Carstairs] |
| 11 | The Origin of Jack Frost | comic story | 6 | script: Stan Lee; pencils: Charles Nicholas; inks: Charles Nicholas | Jack Frost (introduction); Dr. Forbes (introduction, death); Police Commissioner Brian (introduction); Hal Jenkins (introduction); Alice Forbes (introduction); Mike Zelby (villain, introduction) |