| 0 | - | cover | 1 | pencils: Gil Kane, Dave Cockrum; inks: Dave Cockrum; letters: Gaspar Saladino | X-Men [Cyclops; Colossus; Wolverine; Storm; Nightcrawler; Thunderbird [John Proudstar]] |
| 1 | Marvel Masterworks Credits | credits, title page | 3 | letters: typeset | |
| 2 | - | illustration | 1 | pencils: Dave Cockrum; inks: Dave Cockrum | X-Men [Storm; Colossus; Wolverine; Banshee; Nightcrawler]; X-Sentinels [Professor X; Cyclops; Marvel Girl; Angel; Beast; Iceman] |
| 3 | Marvel Masterworks Contents | table of contents | 1 | letters: typeset | |
| 4 | "It wasn't an easy decision, but we did it!" | foreword, introduction, preface, afterword | 2 | script: Stan Lee | |
| 5 | Giant-Size X-Men #1 | cover reprint (on interior page) | 1 | pencils: Gil Kane, Dave Cockrum; inks: Dave Cockrum; letters: Gaspar Saladino | X-Men [Cyclops; Colossus; Wolverine; Storm; Nightcrawler; Thunderbird [John Proudstar]] |
| 6 | Second Genesis! | comic story | 36 | script: Chris Claremont, Len Wein; pencils: Dave Cockrum; inks: Dave Cockrum; colors: Glynis Wein; letters: John Costanza | X-Men [Nightcrawler [Kurt Wagner]; Storm [Ororo Munroe]; Colossus [Peter Rasputin]; Thunderbird [John Proudstar]; Wolverine; Banshee; Cyclops; Marvel Girl [Jean Grey]; Angel [Warren Worthington III]; Iceman; Sunfire; Professor X; Havok]; Lorna Dane; Beast; Illyana Rasputin; Krakoa |
| 7 | X-Men #94 | cover reprint (on interior page) | 1 | pencils: Gil Kane; inks: Dave Cockrum; letters: Dan Crespi | X-Men [Cyclops; Storm; Colossus; Banshee; Nightcrawler]; Count Nefaria |
| 8 | The Doomsmith Scenario! | comic story | 18 | script: Len Wein, Chris Claremont; pencils: Dave Cockrum; inks: Bob McLeod; colors: Phil Rachelson; letters: Tom Orzechowski | X-Men [Professor X; Cyclops; Storm; Wolverine; Colossus; Thunderbird; Banshee; Nightcrawler]; Jean Grey; Iceman; Angel; Havok; Lorna Dane; Beast; Sunfire; Count Nefaria; Ani-Men [Frog-Man; Bird-Man; Ape-Man; Cat-Man; Dragonfly]; General Fredericks; Porcupine; Eel; Scarecrow; Unicorn; Plant Man |
| 9 | X-Men #95 | cover reprint (on interior page) | 1 | pencils: Gil Kane; inks: Dave Cockrum; letters: Dan Crespi | X-Men [Storm; Colossus; Thunderbird; Nightcrawler]; Ape-Man; Frog-Man; Cat-Man; Dragonfly |
| 10 | Warhunt! | comic story | 18 | script: Len Wein, Chris Claremont; pencils: Dave Cockrum; inks: Sam Grainger; colors: Petra Goldberg; letters: Karen Mantlo | X-Men [Professor X; Cyclops; Storm; Wolverine; Colossus; Thunderbird (Death); Banshee; Nightcrawler]; Count Nefaria; Ani-Men [Frog-Man; Cat-Man; Ape-Man; Bird-Man; Dragonfly]; Beast (flashback) |
| 11 | X-Men #96 | cover reprint (on interior page) | 1 | pencils: Sal Buscema, Dave Cockrum, John Romita; inks: Sal Buscema, Dave Cockrum, John Romita; letters: Annette Kawecki | X-Men [Professor X; Cyclops; Storm; Wolverine; Colossus; Nightcrawler]; Kierrok |
| 12 | Night of the Demon! | comic story | 18 | script: Bill Mantlo, Chris Claremont; pencils: Dave Cockrum; inks: Sam Grainger; colors: Phil Rachelson; letters: Dave Hunt | X-Men [Professor X; Cyclops; Storm; Wolverine; Colossus; Banshee; Nightcrawler]; Moira MacTaggert (introduction); Michael Rossi (introduction); Kierrok (introduction, death); Stephen Lang (introduction); Thunderbird; Count Nefaria; N'Dare Munroe; Beast (photo); Jean Grey (photo) |
| 13 | X-Men #97 | cover reprint (on interior page) | 1 | pencils: Rich Buckler; inks: Dave Cockrum; letters: Dan Crespi | X-Men [Cyclops; Storm; Colossus; Nightcrawler; Havok] |
| 14 | My Brother, My Enemy! | comic story | 18 | script: Chris Claremont; pencils: Dave Cockrum; inks: Sam Grainger; colors: Don Warfield; letters: Annette Kaye | X-Men [Professor X; Cyclops; Jean Grey; Storm; Wolverine; Colossus; Banshee; Nightcrawler]; Lilandra (introduction); Havok; Polaris; Moira MacTaggert; Eric the Red (introduction); Stephen Lang |
| 15 | X-Men #98 | cover reprint (on interior page) | 1 | pencils: Dave Cockrum; inks: Dave Cockrum; letters: Dan Crespi | X-Men [Cyclops; Storm; Wolverine; Colossus; Nightcrawler]; Sentinels |
| 16 | Merry Christmas, X-Men... | comic story | 17 | script: Chris Claremont; pencils: Dave Cockrum; inks: Sam Grainger; colors: Janice Cohen; letters: Joe Rosen | X-Men [Professor X; Cyclops; Jean Grey; Storm; Wolverine; Banshee; Colossus; Nightcrawler]; Moira MacTaggert; Peter Corbeau; Amanda Sefton (introduction); Betsy Wilford; Sentinels; Stephen Lang; Nick Fury; Val de Fontaine; Lilandra; Stan Lee (cameo); Jack Kirby (cameo); Chris Claremont (cameo); Juli |
| 17 | X-Men #99 | cover reprint (on interior page) | 1 | pencils: Dave Cockrum; inks: Dave Cockrum; letters: Irving Watanabe | X-Men [Storm; Colossus; Cyclops; Banshee; Nightcrawler]; Sentinels |
| 18 | Deathstar, Rising! | comic story | 17 | script: Chris Claremont; pencils: Dave Cockrum; inks: Frank Chiara; colors: Michele Wolfman; letters: Gaspar Saladino, Irving Watanabe | X-Men [Cyclops; Jean Grey; Storm; Wolverine; Colossus; Banshee; Nightcrawler]; Peter Corbeau; Sentinels; Stephen Lang; Geraldo Rivera (cameo); Black Tom Cassidy; X-Sentinels [Cyclops; Marvel Girl; Iceman; Angel; Beast; Professor X] |
| 19 | X-Men #100 | cover reprint (on interior page) | 1 | pencils: Dave Cockrum; inks: Dave Cockrum; letters: Dan Crespi | X-Men [Storm; Colossus; Wolverine; Banshee; Nightcrawler]; X-Sentinels [Professor X; Cyclops; Marvel Girl; Angel; Beast; Iceman] |
| 20 | Greater Love Hath No X-Man... | comic story | 17 | script: Chris Claremont; pencils: Dave Cockrum; inks: Dave Cockrum; colors: Bonnie Wilford; letters: Annette Kawecki | X-Men [Professor X; Cyclops; Jean Grey; Storm; Wolverine; Colossus; Banshee; Nightcrawler]; Peter Corbeau; Stephen Lang, X-Sentinels [Professor X; Cyclops; Marvel Girl; Angel; Beast; Iceman; Havok; Polaris] |