| 0 | - | cover | 1 | pencils: Alex Schomburg; inks: Alex Schomburg | Sub-Mariner [Namor]; Angel |
| 1 | - | credits, title page | 3 | letters: typeset | Sub-Mariner [Namor] |
| 2 | Marvel Masterworks Credits/Contents | credits, title page | 2 | letters: typeset | |
| 3 | Introduction | foreword, introduction, preface, afterword | 3 | script: Roy Thomas | |
| 4 | Sub-Mariner Comics #1 | cover reprint (on interior page) | 1 | pencils: Alex Schomburg; inks: Alex Schomburg; colors: Jamison Services | Sub-Mariner [Namor]; Angel |
| 5 | Watch for the Big New 2nd Issue of Captain America Comics | promo (ad from the publisher) | 1 | pencils: Jack Kirby; inks: Joe Simon | Captain America; Bucky; Adolph Hitler |
| 6 | Deep-Sea Blitzkrieg! | comic story | 20 | script: Bill Everett; pencils: Bill Everett; inks: Bill Everett; colors: Jamison Services | Sub-Mariner [Namor]; Tha-Korr; Adolph Hitler; Hermann Goering |
| 7 | Buy... Captain America Comics | promo (ad from the publisher) | 1 | pencils: Jack Kirby; inks: Joe Simon; colors: Jamison Services | Captain America; Bucky |
| 8 | The Radium Robbery | comic story | 20 | script: Bill Everett; pencils: Bill Everett; inks: Bill Everett; colors: Jamison Services | Sub-Mariner [Namor]; Betty Dean; Jimmy Fitzsimmons; The Nazis |
| 9 | Namor... His Boyhood | text story | 2 | script: Ray Gill; colors: Jamison Services | Sub-Mariner [Namor] |
| 10 | The House of Horror | comic story | 20 | script: Paul Gustavson; pencils: Paul Gustavson; inks: Paul Gustavson; colors: Jamison Services; letters: Paul Gustavson | The Angel [Tom Halloway]; Ricardo Amegos (death) |
| 11 | Hey, Gang! | promo (ad from the publisher) | 1 | colors: Jamison Services | Fin; Thunderer; Challenger; Blue Diamond; Silver Scorpion; Mr. Million; Captain Daring |
| 12 | Sub-Mariner Comics #2 | cover reprint (on interior page) | 1 | pencils: Alex Schomburg; inks: Alex Schomburg; colors: Jamison Services | Sub-Mariner [Namor]; Angel (inset) |
| 13 | Now on Sale | promo (ad from the publisher) | 1 | pencils: various; inks: various | Defender; Human Torch; Toro; Angel; Captain America; Bucky; Sub-Mariner; Black Marvel |
| 14 | Incident in Canada | comic story | 20 | script: Bill Everett; pencils: Bill Everett; inks: Bill Everett; colors: Jamison Services | Sub-Mariner [Namor]; Herr Schnapps; Nazis |
| 15 | Steaming Statistics of Fire and Water | comic story | 1 | colors: Jamison Services | |
| 16 | Sabotage in a Coal Mine | comic story | 19.5 | script: Bill Everett; pencils: Bill Everett; inks: Bill Everett; colors: Jamison Services | Sub-Mariner [Namor] |
| 17 | Special Offer for Readers of Sub-Mariner Comics | promo (ad from the publisher) | 0.5 | colors: Jamison Services | Captain America; Bucky |
| 18 | Bum Jokes | comic story | 1 | script: Glanz; pencils: Glanz; inks: Glanz; colors: Jamison Services | |
| 19 | The Story Behind the Cover: "Namor 'Blitzes' a Nazi Sub" | text story | 2 | script: Stan Lee; pencils: Bill Everett; inks: Bill Everett; colors: Jamison Services | Sub-Mariner [Namor] |
| 20 | Slaves of the Python | comic story | 20 | script: Paul Gustavson; pencils: George Mandel; inks: George Mandel; colors: Jamison Services | The Angel [Tom Halloway]; The Python (villain) |
| 21 | Don't Miss This Big New Issue of Captain America Comics | promo (ad from the publisher) | 1 | pencils: Jack Kirby; inks: Joe Simon; colors: Jamison Services | Captain America; Bucky |
| 22 | - | filler | 1 | | |
| 23 | Sub-Mariner Comics #3 | cover reprint (on interior page) | 1 | pencils: Alex Schomburg; inks: Alex Schomburg; colors: Jamison Services | Sub-Mariner [Namor] |
| 24 | Smashing Thru Again! | promo (ad from the publisher) | 1 | pencils: Jack Kirby; inks: Joe Simon | Captain America; Bucky |
| 25 | The Mystery of the Disappearing Island Part I | comic story | 20 | pencils: Alex Schomburg, Al Gabriele; inks: Harry Sahle; colors: Jamison Services | Sub-Mariner [Namor]; Winston Churchill; Mueller (death); Nazis; Cestis; a race of sub-sea Druids |
| 26 | Whamo! This Issue is Dynamite! | promo (ad from the publisher) | 1 | colors: Jamison Services | Human Torch; Sub-Mariner [Namor]; Toro; Patriot; Ka-Zar |
| 27 | The Mystery of the Disappearing Island Part II | comic story | 20 | pencils: Alex Schomburg, Al Gabriele; inks: Harry Sahle; colors: Jamison Services | |
| 28 | Dispatch from Africa | text story | 2 | letters: typeset | |
| 29 | The Book You Want! | promo (ad from the publisher) | 1 | pencils: Jack Kirby; inks: Syd Shores; colors: Jamison Services | Destroyer |
| 30 | Death Draws a Comic Strip! | comic story | 20 | pencils: Allen Simon; inks: Howard James; colors: Jamison Services | The Angel [Tom Halloway] |
| 31 | As New and Exciting as Today's News! | promo (ad from the publisher) | 1 | pencils: Bill Everett; inks: Bill Everett; colors: Jamison Services | Sub-Mariner [Namor]; Human Torch (inset); Toro (inset) |
| 32 | - | filler | 1 | | |
| 33 | Sub-Mariner Comics #4 | cover reprint (on interior page) | 1 | pencils: Alex Schomburg; inks: Alex Schomburg; colors: Jamison Services | Sub-Mariner [Namor]; Angel (inset) |
| 34 | Do You Want a Kick out of Reading? | promo (ad from the publisher) | 1 | | Human Torch; Sub-Mariner [Namor] |
| 35 | Murders by Ghost Light | comic story | 20 | pencils: Al Fagaly; colors: Jamison Services | Sub-Mariner [Namor]; The Gleaming Ghost [Dr. Howard]; Ruth Prentiss |
| 36 | Don't Delay Another Second! | promo (ad from the publisher) | 1 | colors: Jamison Services | Captain America |
| 37 | The Horror That Walked | comic story | 18 | pencils: Bill Everett; inks: Al Gabriele; colors: Jamison Services | Sub-Mariner; The Horror [Dacio] (death) |
| 38 | Fresh Meat for a Raider! | text story | 2 | script: Mickey Spillane; colors: Jamison Services | |
| 39 | Pop's Woppers | comic story | 2 | script: Art Gates; pencils: Art Gates; inks: Art Gates; colors: Jamison Services | |
| 40 | Death's Merry-Go-Round! | comic story | 20 | script: Paul Gustavson; pencils: Paul Gustavson; inks: Al Gabriele; colors: Jamison Services; letters: Paul Gustavson | The Angel [Tom Halloway]; Robert Goom |
| 41 | Tonsil Trouble | comic story | 1 | script: Basil Wolverton; pencils: Basil Wolverton; inks: Basil Wolverton; colors: Jamison Services; letters: Basil Wolverton | Dr. Dimwit |
| 42 | Flaming to the Front! | promo (ad from the publisher) | 1 | | Human Torch; Toro |
| 43 | - | promo (ad from the publisher) | 1 | pencils: Alex Schomburg; inks: Alex Schomburg; colors: Jamison Services | Sub-Mariner; Angel |