| 0 | The X-Men | cover | 1 | pencils: Bruce Timm; inks: Bruce Timm; colors: Marie Javins; letters: John Babcock | The X-Men [The Angel; The Beast; Iceman; Cyclops; Marvel Girl] |
| 1 | X Symbol | illustration | 1 | | |
| 2 | The Essential Uncanny X-Men | foreword, introduction, preface, afterword | 1 | | |
| 3 | Table of Contents | table of contents | 2 | | |
| 4 | Reprint Credits / Special Thanks | credits, title page | 1 | | |
| 5 | Cover - The X-Men #1 | cover reprint (on interior page) | 1 | pencils: Jack Kirby; inks: Paul Reinman, Sol Brodsky, Frank Giacoia; letters: Art Simek | The X-Men [Professor X; The Angel; The Beast; Cyclops; Marvel Girl [Jean Grey]; Iceman]; Magneto |
| 6 | X-Men | comic story | 23 | script: Stan Lee; pencils: Jack Kirby; inks: Paul Reinman; letters: Sam Rosen | Professor Charles Xavier (first appearance); X-Men [Cyclops (first appearance); Beast (first appearance); Angel (first appearance); Iceman (first appearance); Marvel Girl [Jean Grey; first appearance]]; Magneto (first appearance) |
| 7 | Cover - The X-Men #2 | cover reprint (on interior page) | 1 | pencils: Jack Kirby; inks: Paul Reinman; letters: Sam Rosen | The X-Men [Professor X; The Angel; The Beast; Cyclops; Marvel Girl [Jean Grey]; Iceman]; The Vanisher |
| 8 | No One Can Stop the Vanisher | comic story | 22 | script: Stan Lee; pencils: Jack Kirby; inks: Paul Reinman; letters: Sam Rosen | The X-Men [Professor X; The Angel; The Beast; Cyclops; Marvel Girl [Jean Grey]; Iceman]; The Vanisher (first appearance); Special Agent Fred Duncan |
| 9 | Cover - The X-Men #3 | cover reprint (on interior page) | 1 | pencils: Jack Kirby; inks: Sol Brodsky; letters: Sam Rosen | The X-Men [The Angel; The Beast; Cyclops; Marvel Girl [Jean Grey]; Iceman]; The Blob |
| 10 | Beware of the Blob! | comic story | 24 | script: Stan Lee; pencils: Jack Kirby; inks: Paul Reinman; letters: Artie Simek | The X-Men [Professor X; The Angel; The Beast; Cyclops; Marvel Girl [Jean Grey]; Iceman]; The Blob (first appearance) |
| 11 | Cover - The X-Men #4 | cover reprint (on interior page) | 1 | pencils: Jack Kirby; inks: George Roussos; letters: Art Simek | The X-Men [Professor X; Cyclops; Marvel Girl [Jean Grey]; Angel; Iceman; Beast]; The Brotherhood of Evil Mutants [Mastermind; Magneto; Toad; Quicksilver; Scarlet Witch] |
| 12 | The Brotherhood of Evil Mutants! | comic story | 23 | script: Stan Lee; pencils: Jack Kirby; inks: Paul Reinman; letters: Artie Simek | The X-Men [Professor X; The Angel; The Beast; Cyclops; Marvel Girl [Jean Grey]; Iceman]; The Brotherhood of Evil Mutants [Mastermind; Magneto; Toad; Quicksilver; Scarlet Witch] |
| 13 | Cover - The X-Men #5 | cover reprint (on interior page) | 1 | pencils: Jack Kirby; inks: Paul Reinman, Marie Severin; letters: Art Simek | The X-Men [Cyclops; Marvel Girl [Jean Grey]; Angel; Iceman; Beast]; The Brotherhood of Evil Mutants [Magneto; Toad; Quicksilver; Scarlet Witch; Mastermind] |
| 14 | Trapped: One X-Man! | comic story | 24 | script: Stan Lee; pencils: Jack Kirby; inks: Paul Reinman; letters: Sam Rosen | The X-Men [Professor X; Cyclops; Marvel Girl [Jean Grey]; Angel; Iceman; Beast]; John Grey; Elaine Grey; The Brotherhood of Evil Mutants [Magneto; Toad; Quicksilver; Scarlet Witch; Mastermind] |
| 15 | Cover - The X-Men #6 | cover reprint (on interior page) | 1 | pencils: Jack Kirby; inks: Chic Stone; letters: Art Simek | The X-Men [Professor X; Cyclops; Marvel Girl [Jean Grey]; Angel; Iceman; Beast]; The Brotherhood of Evil Mutants [Mastermind; Magneto; Toad; Quicksilver; Scarlet Witch]; Namor, the Sub-Mariner |
| 16 | Sub-Mariner! Joins the Evil Mutants | comic story | 22 | script: Stan Lee; pencils: Jack Kirby; inks: Chic Stone; letters: Sam Rosen | The X-Men [Professor X; Cyclops; Marvel Girl [Jean Grey]; Angel; Iceman; Beast]; The Brotherhood of Evil Mutants [Mastermind; Magneto; Toad; Quicksilver; Scarlet Witch]; Namor, the Sub-Mariner |
| 17 | Cover - The X-Men #7 | cover reprint (on interior page) | 1 | pencils: Jack Kirby; inks: Chic Stone; letters: Art Simek | The X-Men [Cyclops; Marvel Girl [Jean Grey]; Angel; Beast; Iceman]; Brotherhood of Evil Mutants [Magneto; Quicksilver; Scarlet Witch; Mastermind; Toad]; Blob |
| 18 | The Return of the Blob | comic story | 22 | script: Stan Lee; pencils: Jack Kirby; inks: Chic Stone; letters: Artie Simek | The X-Men [Professor X; Cyclops; Marvel Girl [Jean Grey]; Angel; Beast; Iceman]; Brotherhood of Evil Mutants [Magneto; Quicksilver; Scarlet Witch; Mastermind; Toad]; Blob; Zelda |
| 19 | Cover - The X-Men #8 | cover reprint (on interior page) | 1 | pencils: Jack Kirby; inks: Chic Stone; letters: Sam Rosen | The X-Men [The Angel; The Beast; Cyclops; Marvel Girl [Jean Grey]; Iceman]; Unus |
| 20 | Unus, the Untouchable! | comic story | 20 | script: Stan Lee; pencils: Jack Kirby; inks: Chic Stone; letters: Sam Rosen | The X-Men [Professor X (cameo); The Angel; The Beast; Cyclops; Marvel Girl [Jean Grey]; Iceman]; Unus (first appearance); Mastermind |
| 21 | Cover - The X-Men #9 | cover reprint (on interior page) | 1 | pencils: Jack Kirby; inks: Chic Stone; letters: Sam Rosen | The X-Men [Professor X; The Angel; The Beast; Cyclops; Marvel Girl [Jean Grey]; Iceman]; The Avengers [Giant-Man [Hank Pym]; Thor; Captain America; Iron Man]; Lucifer |
| 22 | Enter, The Avengers! | comic story | 20 | script: Stan Lee; pencils: Jack Kirby; inks: Chic Stone; letters: Sam Rosen | The X-Men [Professor X; The Angel; The Beast; Cyclops; Marvel Girl [Jean Grey]; Iceman]; The Avengers [Giant-Man [Hank Pym]; Thor; Captain America; Iron Man; Wasp]; Lucifer (first appearance) |
| 23 | Cover - The X-Men #10 | cover reprint (on interior page) | 1 | pencils: Jack Kirby; inks: Chic Stone; letters: Sam Rosen, Art Simek | The X-Men [The Angel; The Beast; Cyclops; Marvel Girl [Jean Grey]; Iceman]; Ka-Zar; Zabu |
| 24 | The Coming of Ka-Zar | comic story | 20 | script: Stan Lee; pencils: Jack Kirby; inks: Chic Stone; letters: Sam Rosen | The X-Men [Professor X; The Angel; The Beast; Cyclops; Marvel Girl [Jean Grey]; Iceman]; Ka-Zar (first Silver Age appearance); Zabu; Maa-Gor; Swamp Men |
| 25 | Cover - The X-Men #11 | cover reprint (on interior page) | 1 | pencils: Jack Kirby; inks: Chic Stone; letters: Sam Rosen | The X-Men [Professor X; The Angel; The Beast; Cyclops; Marvel Girl [Jean Grey]; Iceman]; The Stranger |
| 26 | The Triumph of Magneto! | comic story | 20 | script: Stan Lee; pencils: Jack Kirby; inks: Chic Stone; letters: Artie Simek | The X-Men [Professor X; Cyclops; Marvel Girl [Jean Grey]; Iceman; The Angel; The Beast]; The Stranger (first appearance); Brotherhood of Evil Mutants [Magneto; Mastermind; The Toad; Quicksilver; Scarlet Witch] |
| 27 | Cover - The X-Men #12 | cover reprint (on interior page) | 1 | pencils: Jack Kirby; inks: Frank Giacoia; letters: Sam Rosen | The X-Men [Professor X; Cyclops; Marvel Girl [Jean Grey]; The Angel; The Beast; Iceman]; Juggernaut |
| 28 | The Origin of Professor X! | comic story | 20 | script: Stan Lee; pencils: Jack Kirby, Alex Toth; inks: Vince Colletta; letters: Sam Rosen | The X-Men [Professor X (Origin); Cyclops; Marvel Girl [Jean Grey]; The Angel; The Beast; Iceman]; Juggernaut [Cain Marko; first appearance, origin]; Kurt Marko (flashback); Sharon Xavier [Professor X's mother; flashback] |
| 29 | Cover - The X-Men #13 | cover reprint (on interior page) | 1 | pencils: Jack Kirby; inks: Joe Sinnott; letters: Sam Rosen | The X-Men [Professor X; Cyclops; Marvel Girl [Jean Grey]; The Angel; The Beast; Iceman]; The Human Torch; Juggernaut |
| 30 | Where Walks the Juggernaut! | comic story | 20 | script: Stan Lee; pencils: Jack Kirby, Jay Gavin; inks: Joe Sinnott; letters: Sam Rosen | The X-Men [Professor X; Cyclops; Marvel Girl [Jean Grey]; The Angel; The Beast; Iceman]; Juggernaut; Human Torch |
| 31 | Cover - The X-Men #14 | cover reprint (on interior page) | 1 | pencils: Jack Kirby; inks: Wally Wood; letters: Sam Rosen | The X-Men [Professor X; Cyclops; Marvel Girl [Jean Grey]; The Angel; The Beast; Iceman]; Sentinels |
| 32 | Among Us Stalk...The Sentinels! | comic story | 20 | script: Stan Lee; pencils: Jack Kirby, Jay Gavin; inks: Vince Colletta; letters: Artie Simek | The X-Men [Professor X; Cyclops; Marvel Girl [Jean Grey]; The Angel; The Beast; Iceman]; Sentinels (first appearance); Dr. Bolivar Trask (first appearance); Zelda; Mr. Worthington; Mrs. Worthington |
| 33 | Cover - The X-Men #15 | cover reprint (on interior page) | 1 | pencils: Jack Kirby; inks: Dick Ayers; letters: Sam Rosen | The X-Men [Professor X; Cyclops; Marvel Girl [Jean Grey]; The Angel; The Beast; Iceman]; Sentinels |
| 34 | Prisoners of the Mysterious Master Mold! | comic story | 20 | script: Stan Lee; pencils: Jack Kirby, Jay Gavin; inks: Dick Ayers; letters: Artie Simek | The X-Men [Professor X; Cyclops; Marvel Girl [Jean Grey]; The Angel; The Beast (origin); Iceman]; Sentinels; Master Mold; Dr. Bolivar Trask; Edna McCoy; Norton McCoy |
| 35 | Cover - The X-Men #16 | cover reprint (on interior page) | 1 | pencils: Jack Kirby; inks: Dick Ayers; letters: Sam Rosen | The X-Men [Cyclops; Marvel Girl [Jean Grey]; The Angel; The Beast; Iceman]; Master Mold |
| 36 | The Supreme Sacrifice! | comic story | 20 | script: Stan Lee; pencils: Jack Kirby, Jay Gavin; inks: Dick Ayers; letters: Artie Simek | The X-Men [Professor X; Cyclops; Marvel Girl [Jean Grey]; The Angel; The Beast; Iceman]; Sentinels; Master Mold; Dr. Bolivar Trask (death) |
| 37 | Cover - The X-Men #17 | cover reprint (on interior page) | 1 | pencils: Jack Kirby; inks: Dick Ayers; letters: Sam Rosen | The X-Men [Professor X; Cyclops; Marvel Girl [Jean Grey]; The Angel; The Beast; Iceman]; Magneto's shadow |
| 38 | ...And None Shall Survive! | comic story | 20 | script: Stan Lee; pencils: Jack Kirby, Jay Gavin; inks: Dick Ayers; letters: Artie Simek | The X-Men [Professor X; Cyclops; Marvel Girl [Jean Grey]; The Angel; The Beast; Iceman]; Magneto; Mr. Worthington; Mrs. Worthington |
| 39 | Cover - The X-Men #18 | cover reprint (on interior page) | 1 | pencils: Werner Roth, Jack Kirby; inks: Sol Brodsky; letters: Sam Rosen | The X-Men [Professor X; Cyclops; Marvel Girl [Jean Grey]; Angel; Beast; Iceman]; Magneto |
| 40 | If Iceman Should Fail--! | comic story | 20 | script: Stan Lee; pencils: Jay Gavin; inks: Dick Ayers; letters: Artie Simek | The X-Men [Professor X; Cyclops; Jean Grey; The Angel; The Beast; Iceman]; Mr. Worthington; Mrs. Worthington; Magneto (villain); The Toad (villain); Stranger (cameo) |
| 41 | Cover - The X-Men #19 | cover reprint (on interior page) | 1 | pencils: Werner Roth, Marie Severin; inks: Dick Ayers, Marie Severin; letters: Sam Rosen | The X-Men [Cyclops; Marvel Girl [Jean Grey]; The Angel; The Beast; Iceman]; Mimic |
| 42 | Lo! Now Shall Appear--The Mimic! | comic story | 20 | script: Stan Lee; pencils: Jay Gavin; inks: Dick Ayers; letters: Artie Simek | The X-Men [Professor X; Cyclops; Marvel Girl [Jean Grey]; The Angel; The Beast; Iceman]; Zelda; Vera (first appearance); Mimic [Calvin Rankin] (first appearance, origin, villain) |
| 43 | Cover - The X-Men #20 | cover reprint (on interior page) | 1 | pencils: Werner Roth; inks: Dick Ayers; letters: Sam Rosen | The X-Men [Professor X, Cyclops, Marvel Girl, The Angel, The Beast, Iceman]; Lucifer; The Blob; Unus |
| 44 | I, Lucifer... | comic story | 20 | script: Roy Thomas; pencils: Jay Gavin; inks: Dick Ayers; letters: Artie Simek | The X-Men [Professor X; Cyclops; Marvel Girl [Jean Grey]; The Angel; The Beast; Iceman]; Lucifer; the Blob; Unus; The Supreme One |
| 45 | Cover - The X-Men #21 | cover reprint (on interior page) | 1 | pencils: Werner Roth; inks: Dick Ayers | The X-Men [Professor X; Cyclops; Marvel Girl; The Angel; The Beast; Iceman]; Lucifer |
| 46 | From Whence Comes...Dominus? | comic story | 20 | script: Roy Thomas; pencils: Jay Gavin; inks: Dick Ayers; letters: Artie Simek | The X-Men [Professor X; Cyclops; Marvel Girl; The Angel; The Beast; Iceman]; Lucifer; the Supreme One |
| 47 | Cover - The X-Men #22 | cover reprint (on interior page) | 1 | pencils: Werner Roth; inks: Dick Ayers; letters: Sam Rosen | The X-Men [Professor X; Cyclops; Marvel Girl [Jean Grey]; The Beast; The Angel; Iceman]; Count Nefaria; Unicorn; Eel; Porcupine; Scarecrow; Plant Man |
| 48 | Divided--We Fall! | comic story | 20 | script: Roy Thomas; pencils: Jay Gavin; inks: Dick Ayers; letters: Artie Simek | The X-Men [Professor X; Cyclops; Marvel Girl [Jean Grey]; The Beast; The Angel; Iceman]; Zelda; Vera; Count Nefaria; Maggia; Eel; Porcupine; Unicorn; Scarecrow; Plant Man |
| 49 | Cover - The X-Men #23 | cover reprint (on interior page) | 1 | pencils: Werner Roth; inks: Dick Ayers; letters: Sam Rosen | The X-Men [Cyclops; Marvel Girl [Jean Grey]; The Angel; The Beast; Iceman]; Eel; Porcupine; Plant Man; Unicorn; Scarecrow |
| 50 | To Save a City | comic story | 20 | script: Roy Thomas; pencils: Werner Roth; inks: Dick Ayers; letters: Artie Simek | The X-Men [Professor X; Cyclops; Marvel Girl [Jean Grey]; The Angel; The Beast; Iceman]; Count Nefaria; Plant Man; Eel; Porcupine; Unicorn; Scarecrow; General Fredericks; Colonel Hendershoot |
| 51 | Cover - The X-Men #24 | cover reprint (on interior page) | 1 | pencils: Werner Roth; inks: Dick Ayers; letters: Sam Rosen | The X-Men [Cyclops; Marvel Girl [Jean Grey]; The Angel; The Beast; Iceman]; Locust [August Hopper] |
| 52 | The Plague of ... The Locust! | comic story | 20 | script: Roy Thomas; pencils: Werner Roth; inks: Dick Ayers; letters: Sam Rosen | The X-Men [Professor X; Cyclops; Marvel Girl [Jean Grey]; The Angel; The Beast; Iceman]; Ted Roberts; The Locust [August Hopper] |
| 53 | Also Available: | promo (ad from the publisher) | 1 | letters: typeset | |
| 54 | The Essential Uncanny X-Men | promo (ad from the publisher) | 1 | pencils: Bruce Timm; inks: Bruce Timm; colors: Marie Javins; letters: Jonathan Babcock | The X-Men [Professor X; Cyclops; Marvel Girl [Jean Grey]; The Beast; The Angel; Iceman] |