| 0 | - | cover | 1 | pencils: Neal Adams | X-Men [Cyclops; Marvel Girl; Angel; Iceman; Beast]; Havok |
| 1 | Credits | credits, title page | 1 | letters: typeset | |
| 2 | - | illustration | 1 | pencils: Neal Adams; inks: Neal Adams | X-Men [Cyclops; Marvel Girl; Angel; Iceman; Beast]; Living Monolith |
| 3 | Contents | table of contents | 1 | letters: typeset | |
| 4 | Introduction | foreword, introduction, preface, afterword | 4 | script: Roy Thomas | |
| 5 | X-Men #54 | cover reprint (on interior page) | 1 | pencils: Barry Smith; inks: Vince Colletta | X-Men [Cyclops; Marvel Girl; Angel; Iceman; Beast]; Living Pharaoh |
| 6 | Wanted: Dead or Alive--Cyclops! | comic story | 15 | script: Arnold Drake; pencils: Don Heck; inks: Vince Colletta; letters: Jean Izzo | X-Men [Cyclops [Scott Summers]; Marvel Girl [Jean Grey]; Angel [Warren Worthington III]; Iceman [Bobby Drake]; Beast [Hank McCoy]]; Alex Summers; Living Pharaoh [Ahmet Abdol] |
| 7 | The Million Dollar Angel | comic story | 5 | script: Arnold Drake; pencils: Werner Roth; inks: Vince Colletta; letters: Artie Simek | Angel [Warren Worthington III] |
| 8 | X-Men #55 | cover reprint (on interior page) | 1 | pencils: Barry Smith; inks: Vince Colletta | X-Men [Cyclops; Marvel Girl; Angel; Iceman; Beast] |
| 9 | The Living Pharaoh! | comic story | 15 | script: Roy Thomas; pencils: Don Heck, Werner Roth; inks: Vince Colletta; letters: Jean Izzo | X-Men [Cyclops [Scott Summers]; Marvel Girl [Jean Grey]; Angel [Warren Worthington III]; Iceman [Bobby Drake]; Beast [Hank McCoy]]; Alex Summers; Living Pharaoh [Ahmet Abdol] |
| 10 | Where Angels Dare To Tread! | comic story | 5 | script: Roy Thomas; pencils: Werner Roth; inks: Sam Grainger; letters: Sam Grainger | Professor X [Charles Xavier]; Cyclops [Scott Summers]; Iceman [Bobby Drake]; Angel [Warren Worthington III] |
| 11 | X-Men #56 | cover reprint (on interior page) | 1 | pencils: Neal Adams; inks: Neal Adams | X-Men [Cyclops; Marvel Girl; Angel; Iceman; Beast]; Living Monolith |
| 12 | What Is...the Power? | comic story | 15 | script: Roy Thomas; pencils: Neal Adams; inks: Tom Palmer; letters: Herb Cooper | X-Men [Cyclops [Scott Summers]; Marvel Girl [Jean Grey]; Angel [Warren Worthington III]; Iceman [Bobby Drake]; Beast [Hank McCoy]]; Havok [Alex Summers]; Living Monolith [Ahmet Abdol] |
| 13 | The Flying A-Bomb! | comic story | 5 | script: Roy Thomas; pencils: Werner Roth; inks: Sam Grainger; letters: Sam Grainger | Professor X [Charles Xavier]; Cyclops [Scott Summers]; Iceman [Bobby Drake]; Angel [Warren Worthington III] |
| 14 | X-Men #57 | cover reprint (on interior page) | 1 | pencils: Neal Adams; inks: Tom Palmer | X-Men [Cyclops; Marvel Girl; Angel; Iceman; Beast]; Larry Trask |
| 15 | The Sentinels Live! | comic story | 15 | script: Roy Thomas; pencils: Neal Adams; inks: Tom Palmer; letters: Sam Rosen | 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]; Larry Trask |
| 16 | The Female of the Species! | comic story | 5 | script: Linda Fite; pencils: Werner Roth; inks: Sam Grainger; letters: Sam Grainger | Marvel Girl [Jean Grey] |
| 17 | X-Men #58 | cover reprint (on interior page) | 1 | pencils: Neal Adams | X-Men [Cyclops; Marvel Girl; Angel; Iceman; Beast]; Havok |
| 18 | Mission: Murder! | comic story | 20 | script: Roy Thomas; pencils: Neal Adams; inks: Tom Palmer; letters: Artie Simek | 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 |
| 19 | X-Men #59 | cover reprint (on interior page) | 1 | pencils: Neal Adams | Cyclops |
| 20 | Do or Die, Baby! | comic story | 20 | script: Chris Claremont, Roy Thomas; pencils: Neal Adams; inks: Tom Palmer; letters: Sam Rosen | X-Men [Cyclops [Scott Summers]; Marvel Girl [Jean Grey]; Angel [Warren Worthington III]; Iceman [Bobby Drake]; Beast [Hank McCoy]]; Larry Trask |
| 21 | X-Men #60 | cover reprint (on interior page) | 1 | pencils: Neal Adams | X-Men [Cyclops; Marvel Girl; Angel; Iceman; Beast]; Sauron |
| 22 | In the Shadow of...Sauron! | comic story | 20 | script: Roy Thomas; pencils: Neal Adams; inks: Tom Palmer; letters: Sam Rosen | 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]; Sauron [Karl Lykos] |
| 23 | X-Men #61 | cover reprint (on interior page) | 1 | pencils: Neal Adams | X-Men [Cyclops; Marvel Girl; Angel; Iceman; Beast]; Sauron |
| 24 | Monsters Also Weep! | comic story | 20 | script: Roy Thomas; pencils: Neal Adams; inks: Tom Palmer; letters: Sam Rosen | 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]; Sauron [Karl Lykos] |
| 25 | X-Men #62 | cover reprint (on interior page) | 1 | pencils: Neal Adams; inks: Tom Palmer | X-Men [Cyclops; Marvel Girl;Iceman; Beast]; Ka-Zar |
| 26 | Strangers...in a Savage Land! | comic story | 20 | script: Roy Thomas; pencils: Neal Adams; inks: Tom Palmer; letters: Sam Rosen | X-Men [Cyclops [Scott Summers]; Marvel Girl [Jean Grey]; Angel [Warren Worthington III]; Iceman [Bobby Drake]; Beast [Hank McCoy]]; Ka-Zar; Amphibius; Brainchild; Equilibrius; Gaza; Lupo; Piper; Magneto |
| 27 | X-Men #63 | cover reprint (on interior page) | 1 | pencils: Neal Adams; inks: Tom Palmer | X-Men [Cyclops; Iceman; Beast]; Ka-Zar; Magneto; Lorelei |
| 28 | War in the World Below! | comic story | 20 | script: Roy Thomas; pencils: Neal Adams; inks: Tom Palmer; letters: Sam Rosen | X-Men [Cyclops [Scott Summers]; Marvel Girl [Jean Grey]; Angel [Warren Worthington III]; Iceman [Bobby Drake]; Beast [Hank McCoy]]; Ka-Zar; Amphibius; Equilibrius; Gaza; Barbarus; Lupo; Brainchild; Lorelei; Magneto |
| 29 | X-Men #64 | cover reprint (on interior page) | 1 | pencils: Sal Buscema; inks: Tom Palmer | X-Men [Cyclops; Marvel Girl; Angel; Iceman; Beast]; Sunfire |
| 30 | The Coming of Sunfire! | comic story | 20 | script: Roy Thomas; pencils: Don Heck; inks: Tom Palmer; letters: Artie Simek | X-Men [Cyclops [Scott Summers]; Marvel Girl [Jean Grey]; Angel [Warren Worthington III]; Iceman [Bobby Drake]; Beast [Hank McCoy]]; Sunfire [Shiro Yoshida] |
| 31 | X-Men #65 | cover reprint (on interior page) | 1 | pencils: Marie Severin; inks: Tom Palmer | X-Men [Cyclops; Marvel Girl; Angel; Iceman; Beast] |
| 32 | Before I'd Be Slave | comic story | 20 | script: Denny O'Neil; pencils: Neal Adams; inks: Tom Palmer; letters: Jean Izzo | 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] |
| 33 | X-Men #66 | cover reprint (on interior page) | 1 | pencils: Marie Severin; inks: Sam Grainger | X-Men [Cyclops; Marvel Girl; Angel; Iceman; Beast]; Hulk |
| 34 | The Mutants and the Monster | comic story | 20 | script: Roy Thomas; pencils: Sal Buscema; inks: Sam Grainger; letters: Artie Simek | 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]; Hulk [Bruce Banner] |
| 35 | X-Men #56 Unused Cover | illustration | 1 | pencils: Neal Adams; inks: Tom Palmer | |
| 36 | X-Men #62 Hand-Colored Guides | illustration | 8 | script: Roy Thomas; pencils: Neal Adams; inks: Tom Palmer; letters: Sam Rosen | X-Men [Cyclops [Scott Summers]; Marvel Girl [Jean Grey]; Angel [Warren Worthington III]; Iceman [Bobby Drake]; Beast [Hank McCoy]]; Ka-Zar; Amphibius; Brainchild; Equilibrius; Gaza; Lupo; Piper; Magneto |
| 37 | X-Men #64, Pages 2, 9, 10, 14, 15, 17, 18, 20 Original Art | illustration | 8 | script: Roy Thomas; pencils: Don Heck; inks: Tom Palmer; letters: Sam Rosen | |
| 38 | Biographies | text article | 2 | script: John Rhett Thomas | |