| 0 | - | cover | 1 | pencils: Dave Cockrum, John Cassaday; inks: Dave Cockrum, John Cassaday; colors: Laura Martin | Banshee, Beast, Sean Cassidy, Colossus, Cyclops, Emma Frost, Logan, Hank McCoy, Ororo Munroe, Nightcrawler, John Proudstar, Kitty Pryde, Piotr Rasputin, Storm |
| 1 | Teamwork | comic story | 8 | script: Joss Whedon; pencils: Neal Adams; inks: Neal Adams; colors: Richard Isanove; letters: Chris Eliopoulos | X-Men [Wolverine [Logan]; Storm; Nightcrawler; Colossus; Sunfire; Banshee; Thunderbird [John Proudstar]] |
| 2 | Original Cover to Giant-Size X-Men #1 | cover reprint (on interior page) | 1 | pencils: Gil Kane; inks: Dave Cockrum; letters: Gaspar Saladino | X-Men [Cyclops; Jean Grey; Iceman; Beast; Angel; Storm; Wolverine [Logan]; Colossus; Nightcrawler; Thunderbird [John Proudstar]] |
| 3 | Original Cover to Giant-Size X-Men #2 | cover reprint (on interior page) | 1 | pencils: Gil Kane; inks: Klaus Janson | X-Men [Cyclops; Jean Grey; Iceman; Beast; Angel]; Sentinels |
| 4 | Original Cover to X-Men #9 | cover reprint (on interior page) | 1 | pencils: Jack Kirby; inks: Chic Stone; editing: Stan Lee | x-Men [Professor X; Angel; Beast; Cyclops; Jean Grey; Iceman]; Avengers [Giant-Man [Hank Pym]; Thor [Donald Blake]; Captain America [Steve Rogers]; Iron Man [Tony Stark]]; Lucifer |
| 5 | Enter, The Avengers! | comic story | 20 | script: Stan Lee; pencils: Jack Kirby; inks: Chic Stone; letters: Sam Rosen; editing: Stan Lee | X-Men [Professor X; Cyclops; Jean Grey; Iceman; Beast; Angel]; Avengers [Giant-Man [Hank Pym]; Thor [Donald Blake]; Captain America [Steve Rogers]; Iron Man [Tony Stark]; Wasp [Janet Van Dyne]]; Lucifer (villain) |
| 6 | A Marvel Masterwork Pin-Up | illustration | 1 | pencils: Jack Kirby; inks: Chic Stone; editing: Stan Lee | Jean Grey [Marvel Girl] |
| 7 | Original Cover to Fantastic Four #28 | cover reprint (on interior page) | 1 | pencils: Jack Kirby; inks: Chic Stone; editing: Stan Lee | Fantastic Four [Mr. Fantastic; Invisible Girl; Human Torch [Johnny Storm]; Thing]; X-Men [Cyclops; Jean Grey; Iceman; Beast; Angel]; Awesome Android |
| 8 | We Have to Fight the X-Men! | comic story | 23 | script: Stan Lee; pencils: Jack Kirby; inks: Chic Stone; letters: Artie Simek; editing: Stan Lee | Fantastic Four [Mr. Fantastic; Invisible Girl; Human Torch [Johnny Storm]; Thing]; Alicia Masters; X-Men [Cyclops; Jean Grey; Iceman; Beast; Angel]; Mad Thinker (villain); Awesome Android (villain); Puppet Master (villain) |
| 9 | The X-Men's First Meeting with Spider-Man | comic story | 1 | script: Roy Thomas; pencils: Werner Roth; inks: Dick Ayers; letters: Sam Rosen; editing: Stan Lee | X-Men [Iceman; Beast]; Spider-Man [Peter Parker] |
| 10 | Original Cover to X-Men #35 | cover reprint (on interior page) | 1 | pencils: Dan Adkins; inks: Dan Adkins; editing: Stan Lee | X-Men [Cyclops; Jean Grey; Iceman; Beast; Angel]; Spider-Man [Peter Parker] |
| 11 | Along Came a Spider... | comic story | 20 | script: Roy Thomas; pencils: Werner Roth; inks: Dan Adkins; letters: Jerry Feldmann; editing: Stan Lee | X-Men [Cyclops; Jean Grey; Iceman; Angel; Beast]; Spider-Man [Peter Parker]; Banshee; Factor Three (cameo); Mekano (cameo; last panel teaser) |