| 0 | - | cover | 1 | pencils: Neal Adams; inks: Neal Adams; colors: George Roussos; editing: Bob Harras | Cyclops; Angel; Havok; Beast; Marvel Girl; Iceman |
| 1 | - | illustration | 1 | | Wolverine [Logan] |
| 2 | - | credits, title page | 3 | letters: typeset | Wolverine [Logan]; Colossus |
| 3 | - | table of contents | 1 | letters: typeset | |
| 4 | Introduction | foreword, introduction, preface, afterword | 3 | script: Neal Adams | |
| 5 | What Is the Power? | comic story | 15 | script: Roy Thomas; pencils: Neal Adams; inks: Tom Palmer; colors: Derek Bellman; letters: Herb Cooper; editing: Bob Harras | X-Men [Cyclops [Scott Summers]; Marvel Girl [Jean Grey]; Angel [Warren Worthington III]; Iceman [Bobby Drake]; Beast [Henry McCoy]]; Alex Summers [Havok] (origin continued); The Living Monolith [Ahmet Abdol] [also as Living Pharaoh] (villain) |
| 6 | The Sentinels Live! | comic story | 15 | script: Roy Thomas; pencils: Neal Adams; inks: Tom Palmer; colors: Derek Bellman; letters: Sam Rosen; editing: Bob Harras | X-Men [Cyclops; Marvel Girl; Angel; Iceman; Beast]; Polaris [Lorna Dane]; Havok [Alex Summers]; Judge Chalmers; Larry Trask (villain); Sentinels (villains); Living Pharaoh [Ahmet Abdol] (villain); Bolivar Trask (cameo flashback) |
| 7 | Mission: Murder! | comic story | 20 | script: Roy Thomas; pencils: Neal Adams; inks: Tom Palmer; colors: Derek Bellman; letters: Sam Rosen; editing: Bob Harras | X-Men [Cyclops [Scott Summers]; Marvel Girl [Jean Grey]; Angel [Warren Worthington III]; Iceman [Bobby Drake]; Beast [Hank McCoy]]; Havok [Alex Summers] (1st in costume); Lorna Dane [Polaris]; Banshee [Sean Cassidy]; Mesmero; Magneto Robot (destroyed); Living Monolith [Ahmet Abdol]; Larry Trask (vil |
| 8 | Do or Die, Baby! | comic story | 20 | script: Roy Thomas; pencils: Neal Adams; inks: Tom Palmer; colors: Derek Bellman; letters: Sam Rosen; editing: Bob Harras | X-Men [Cyclops [Scott Summers]; Marvel Girl [Jean Grey]; Angel [Warren Worthington III]; Iceman [Bobby Drake]; Beast [Hank McCoy]]; Havok [Alex Summers]; Quicksilver [Pietro Maximoff]; Scarlet Witch [Wanda Maximoff]; Toad [Mortimer Toynbee]; Larry Trask (villain); Judge Chalmers (villain); Sentinels |
| 9 | In the Shadow of...Sauron! | comic story | 20 | script: Roy Thomas; pencils: Neal Adams; inks: Tom Palmer; colors: Brian Buccellato; letters: Sam Rosen; editing: Bob Harras | X-Men [Cyclops; Marvel Girl [Jean Grey]; Angel [Warren Worthington III]; Iceman; Beast]; Havok; Lorna Dane [Polaris]; Tanya Anderssen (introduction, flashback); Dr. Anderssen (introduction, flashback); Larry Trask (villain); Judge Chalmers (villain); Sauron [Karl Lykos] (villain, introduction); Scar |
| 10 | Monsters Also Weep! | comic story | 20 | script: Roy Thomas; pencils: Neal Adams; inks: Tom Palmer; colors: Brian Buccellato; letters: Sam Rosen; editing: Bob Harras | X-Men [Cyclops [Scott Summers]; Marvel Girl [Jean Grey]; Angel [Warren Worthington III]; Iceman [Bobby Drake]; Beast [Hank McCoy]]; Polaris [Lorna Dane]; Havok [Alex Summers]; Tanya Anderssen; Dr. Anderssen; Sauron [Karl Lykos] (villain) |
| 11 | Strangers...In a Savage Land! | comic story | 20 | script: Roy Thomas; pencils: Neal Adams; inks: Tom Palmer; colors: Brian Buccellato; letters: Sam Rosen; editing: Bob Harras | X-Men [Cyclops [Scott Summers]; Marvel Girl [Jean Grey]; Angel [Warren Worthington III]; Iceman [Bobby Drake]; Beast [Hank McCoy]]; Ka-Zar; Zabu; Magneto (villain); Amphibius (villain, introduction); Equilibrius (villain, introduction); Piper (villain, introduction); Gaza (villain, introduction); Ba |
| 12 | War in the World Below! | comic story | 20 | script: Roy Thomas; pencils: Neal Adams; inks: Tom Palmer; colors: Brian Buccellato; letters: Sam Rosen; editing: Bob Harras | |
| 13 | Before I'd Be Slave... | comic story | 20 | script: Denny O'Neil; pencils: Neal Adams; inks: Tom Palmer; colors: Gregory Wright; letters: Jean Simek; editing: Bob Harras | X-Men [Professor X [Charles Xavier]; Cyclops [Scott Summers]; Marvel Girl [Jean Grey]; Angel [Warren Worthington III]; Iceman [Bobby Drake]; Beast [Hank McCoy]]; Polaris [Lorna Dane]; Havok [Alex Summers]; Fantastic Four [Human Torch [Johnny Storm]; Crystal; Mr. Fantastic [Reed Richards]; Thing [Ben |
| 14 | - | cover reprint (on interior page) | 1 | pencils: Neal Adams; inks: Neal Adams | |
| 15 | - | cover reprint (on interior page) | 1 | pencils: Neal Adams; inks: Tom Palmer | |
| 16 | - | cover reprint (on interior page) | 1 | pencils: Neal Adams; inks: Tom Palmer | |
| 17 | - | cover reprint (on interior page) | 1 | pencils: Neal Adams; inks: Tom Palmer | |
| 18 | - | cover reprint (on interior page) | 1 | pencils: Neal Adams; inks: Tom Palmer | |
| 19 | - | cover reprint (on interior page) | 1 | pencils: Neal Adams; inks: Tom Palmer | |
| 20 | - | cover reprint (on interior page) | 1 | pencils: Neal Adams; inks: Tom Palmer | |
| 21 | - | cover reprint (on interior page) | 1 | pencils: Neal Adams; inks: Tom Palmer | |
| 22 | - | cover reprint (on interior page) | 1 | pencils: Marie Severin; inks: Tom Palmer | |
| 23 | Sketchbook | illustration | 8 | pencils: Neal Adams | |
| 24 | Afterword | foreword, introduction, preface, afterword | 2 | script: Tom Palmer | |