- Letters
- ?
Inside front cover. Circle X symbol.
- Script
- ?
- Letters
- ?
Title page. Logo and indicia, no illustration.
- Script
- ?
- Letters
- ?
List of stories and creators.
- Script
- ?
- Pencils
- ?
- Inks
- ?
- Letters
- ?
Credits for this volume. Design includes "circle X" logo.
- Pencils
- Jack Kirby
- Inks
- Paul Reinman ?; Sol Brodsky ?; Frank Giacoia ?
- Letters
- Artie Simek
- Genre
- superhero
- Characters
- The X-Men [Professor X; The Angel; The Beast; Cyclops; Marvel Girl [Jean Grey]; Iceman]; Magneto
- Reprints
First Appearance of X-Men and Magneto.
Disputed inker credit:
1. Sol Brodsky, from The Marvel Comics Index (Olshevsky 1981), The Official Marvel Index to the X-Men (Olshevsky 1987), and Official Index to the Marvel Universe (Vandal et al. 2009), and per Nick Caputo, Bob Ford, and this site’s original indexer;
2. Frank Giacoia per Carl Gafford;
3. Paul Reinman per Steve Whitaker.
- Script
- Stan Lee
- Pencils
- Jack Kirby
- Inks
- Paul Reinman
- Colors
- ?
- Letters
- Sam Rosen
- Job Number
- X-401
- Genre
- superhero
- Characters
- 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)
- Synopsis
- After a day of training and meeting Jean Grey, a new student at Professor X's school, the X-Men go on their first assignment--stopping a mutant named Magneto from talking over an Air Force base.
- Reprints
- Pencils
- Jack Kirby
- Inks
- Paul Reinman
- Letters
- Sam Rosen
- Genre
- superhero
- Characters
- The X-Men [Professor X; The Angel; The Beast; Cyclops; Marvel Girl [Jean Grey]; Iceman]; The Vanisher
- Reprints
- Script
- Stan Lee
- Pencils
- Jack Kirby
- Inks
- Paul Reinman
- Letters
- Sam Rosen
- Genre
- superhero
- Characters
- The X-Men [Professor X; The Angel; The Beast; Cyclops; Marvel Girl [Jean Grey]; Iceman]; The Vanisher (first appearance); Special Agent Fred Duncan
- Synopsis
- The X-Men face a new foe: The Vanisher!
- Reprints
- Pencils
- Jack Kirby
- Inks
- Sol Brodsky ?
- Letters
- Sam Rosen
- Genre
- superhero
- Characters
- The X-Men [The Angel; The Beast; Cyclops; Marvel Girl [Jean Grey]; Iceman]; The Blob
- Reprints
Disputed inker credit--Sol Brodsky from The Marvel Comics Index (Olshevsky 1981) and The Official Marvel Index to the X-Men (Olshevsky 1987), with Nick Caputo, Bob Ford, this site’s original indexer, and Official Index to the Marvel Universe (Vandal et al. 2009) concurring; Paul Reinman per Steve Whitaker; Frank Giacoia per Carl Gafford.
- Script
- Stan Lee
- Pencils
- Jack Kirby
- Inks
- Paul Reinman
- Letters
- Artie Simek
- Genre
- superhero
- Characters
- The X-Men [Professor X; The Angel; The Beast; Cyclops; Marvel Girl [Jean Grey]; Iceman]; The Blob (first appearance)
- Synopsis
- Professor X detects a new mutant and sends the X-Men to investigate. They arrive at a carnival and encounter the Blob, a very fat sideshow attraction who can bounce bullets off of his malleable hide as well as anchor himself to the earth and become immovable. The X-Men bring him back to the mansion as a potential member, but the Blob spurns their invitation and returns to the carnival. Realizing that the Blob knows their secret, the X-Men lure him back to the mansion where Xavier wipes his memory.
- Reprints
- Script
- ?
- Pencils
- Jack Kirby
- Inks
- George Roussos ?
- Letters
- Artie Simek
- Genre
- superhero
- Characters
- The X-Men [Professor X; Cyclops; Marvel Girl [Jean Grey]; Angel; Iceman; Beast]; The Brotherhood of Evil Mutants [Mastermind; Magneto; Toad; Quicksilver; Scarlet Witch]
- Reprints
Disputed inker credit--George Roussos per Carl Gafford and Nick Caputo; Paul Reinman from The Marvel Comics Index (Olshevsky 1981) and The Official Marvel Index to the X-Men (Olshevsky 1987), with this site’s original indexer concurring.
- Script
- Stan Lee
- Pencils
- Jack Kirby
- Inks
- Paul Reinman
- Letters
- Artie Simek
- Job Number
- X-607
- Genre
- superhero
- Characters
- 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]
- Synopsis
- Magneto and his new Brotherhood of Evil Mutants steal a freighter and use it to take over the South American nation of Santo Marco. The X-Men invade and take the country back. Xavier is caught in an explosion and loses his mental powers.
- Reprints
- Pencils
- Jack Kirby
- Inks
- Paul Reinman; Marie Severin (Angel alterations)
- Letters
- Artie Simek
- Genre
- superhero
- Characters
- The X-Men [Cyclops; Marvel Girl [Jean Grey]; Angel; Iceman; Beast]; The Brotherhood of Evil Mutants [Magneto; Toad; Quicksilver; Scarlet Witch; Mastermind]
- Reprints
- Script
- Stan Lee
- Pencils
- Jack Kirby
- Inks
- Paul Reinman
- Letters
- Sam Rosen
- Job Number
- X-668
- Genre
- superhero
- Characters
- 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]
- Synopsis
- With Xavier's mental powers gone, the X-Men try to decide how they will function without his leadership. Trying to ferret out the X-Men, Magneto has the Toad enter a track meet where he leaps to victory. With the crowd turning hostile due to the Toad's amazing abilities, the X-Men arrive on the scene to capture him. Magneto snags the Angel and whisks him away to Asteroid M. In an attempt to trade the Toad for the Angel, the X-Men arrive on Asteroid M where they battle the Brotherhood once again. On their safe return to earth, Xavier revels that his power loss was a ruse to test his students.
- Reprints
- Pencils
- Jack Kirby
- Inks
- Chic Stone
- Letters
- Artie Simek
- Genre
- superhero
- Characters
- 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
- Reprints
- Script
- Stan Lee
- Pencils
- Jack Kirby
- Inks
- Chic Stone
- Letters
- Sam Rosen
- Job Number
- X-706
- Genre
- superhero
- Characters
- 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
- Synopsis
- Xavier reads a news story about Namor and wonders if he is a possible mutant. Magneto comes to the same conclusion and invades the Sub-Mariner's realm with an invitation to join his Brotherhood. Enchanted by the Scarlet Witch, Namor agrees. The X-Men attack and, during the ensuing battle, Namor decides not to join either team, mutant or no.
- Reprints
This story takes place soon after Fantastic Four #27.
- Pencils
- Jack Kirby
- Inks
- Chic Stone
- Letters
- Artie Simek
- Genre
- superhero
- Characters
- The X-Men [Cyclops; Marvel Girl [Jean Grey]; Angel; Beast; Iceman]; Brotherhood of Evil Mutants [Magneto; Quicksilver; Scarlet Witch; Mastermind; Toad]; Blob
- Reprints
- Script
- Stan Lee
- Pencils
- Jack Kirby
- Inks
- Chic Stone
- Letters
- Artie Simek
- Job Number
- X-768
- Genre
- superhero
- Characters
- 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
- Synopsis
- The X-Men graduate from Xavier's school. The Professor says he is taking a leave of absence and puts Cyclops in charge. He shows him his new mutant-detecting machine, Cerebro. Magneto finds the Blob and invites him to join the Brotherhood. During a scuffle, Xavier's mental blocks dissolve and Blob remembers the secret of the X-Men. The Blob's name lights up on Cerebro and Scott calls the X-Men back to battle the evil mutants. During the battle, Magneto shoots missiles at the X-Men, even though the Blob is in the line of fire. The Blob, feeling betrayed, decides to return to carnival life.
- Reprints
First appearance of Cerebro.
- Pencils
- Jack Kirby
- Inks
- Chic Stone
- Letters
- Sam Rosen
- Genre
- superhero
- Characters
- The X-Men [The Angel; The Beast; Cyclops; Marvel Girl [Jean Grey]; Iceman]; Unus
- Reprints
- Script
- Stan Lee
- Pencils
- Jack Kirby
- Inks
- Chic Stone
- Letters
- Sam Rosen
- Job Number
- X-803
- Genre
- superhero
- Characters
- The X-Men [Professor X (cameo); The Angel; The Beast; Cyclops; Marvel Girl [Jean Grey]; Iceman]; Unus (first appearance); Mastermind
- Synopsis
- After being attacked by a mutant hating crowd, Beast gets fed up and quits the X-Men. He becomes a professional wrestler but meets Unus, a mutant who cannot be touched. Unus is trying to join Magneto's Brotherhood so he takes on the X-Men. The X-Men barely fend him off and find Beast has constructed a machine that will actually increase Unus' powers. The X-Men try to prevent Hank from using the machine, but, once Unus has been zapped, he finds that he cannot even eat without the food being repelled out of his hands. Beast returns him to normal and Unus promises to will steer clear of Magneto.
- Reprints
Iceman changes from snowman form to ice form.
- Pencils
- Jack Kirby
- Inks
- Chic Stone
- Letters
- Sam Rosen
- Genre
- superhero
- Characters
- 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
- Reprints
- Script
- Stan Lee
- Pencils
- Jack Kirby
- Inks
- Chic Stone
- Letters
- Sam Rosen
- Genre
- superhero
- Characters
- 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)
- Synopsis
- Xavier has tracked down Lucifer, who cost him the use of his legs, but finds his foe's heartbeat is rigged to a giant thermal bomb. The X-Men arrive in Bavaria and run across the Avengers who have also just arrived. The X-Men have to stop the Avengers from defeating Lucifer since by defeating Lucifer, the world will be destroyed. After Xavier gives Lucifer a mind blast that renders him unconscious, he contacts his team for help and the Avengers agree to let the X-Men clean up the current crisis on their own. Cyclops uses his eye beams to disable Lucifer's thermal bomb.
- Reprints
- Pencils
- Jack Kirby
- Inks
- Chic Stone
- Letters
- Sam Rosen (upper captions); Artie Simek (Zabu caption)
- Genre
- superhero
- Characters
- The X-Men [The Angel; The Beast; Cyclops; Marvel Girl [Jean Grey]; Iceman]; Ka-Zar; Zabu
- Reprints
- Script
- Stan Lee
- Pencils
- Jack Kirby
- Inks
- Chic Stone
- Letters
- Sam Rosen
- Genre
- superhero
- Characters
- 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
- Synopsis
- Xavier allows the X-Men to travel to Antarctica and enter the Savage Land to investigate the noble savage, Ka-Zar, even though he is not a mutant. They end up having to save Jean and Warren from being sacrificed by the savage Swamp Men.
- Reprints
- Pencils
- Jack Kirby
- Inks
- Chic Stone
- Letters
- Sam Rosen
- Genre
- superhero
- Characters
- The X-Men [Professor X; The Angel; The Beast; Cyclops; Marvel Girl [Jean Grey]; Iceman]; The Stranger
- Reprints
- Script
- Stan Lee
- Pencils
- Jack Kirby
- Inks
- Chic Stone
- Letters
- Artie Simek
- Genre
- superhero
- Characters
- 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]
- Synopsis
- Xavier detects a powerful entity has arrived on earth and sends the X-Men to investigate. The Stranger tries to acclimate himself to Earth customs but runs across Magneto and the Brotherhood. The X-Men arrive on the scene and battle the Brotherhood, but the Stranger leaves with Magneto and Toad in the conflict. Quicksilver and the Scarlet Witch decide to return home to Central Europe. The X-Men encounter the Stranger again and Xavier realizes he is an alien. The Stranger explains that he has been collecting mutants from across the universe and takes Magneto and Toad away with him into space.
- Reprints
- Pencils
- Jack Kirby
- Inks
- Frank Giacoia
- Letters
- Sam Rosen
- Genre
- superhero
- Characters
- The X-Men [Professor X; Cyclops; Marvel Girl [Jean Grey]; The Angel; The Beast; Iceman]; Juggernaut
- Reprints
- Script
- Stan Lee
- Pencils
- Jack Kirby (layouts); Alex Toth (pencils)
- Inks
- Vince Colletta
- Letters
- Sam Rosen
- Genre
- superhero
- Characters
- 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]
- Synopsis
- Cerebro detects a powerful mutant and Xavier fears that he knows who it is. The X-Men prepare the mansion for an all-out assault. As the mysterious villain batters his way through the mansion's defenses, Professor X tells his students his origin story and how his step-brother changed from tormenting bully to an unstoppable Juggernaut.
- Reprints
First two-part story.
- Pencils
- Jack Kirby
- Inks
- Joe Sinnott
- Letters
- Sam Rosen
- Genre
- superhero
- Characters
- The X-Men [Professor X; Cyclops; Marvel Girl [Jean Grey]; The Angel; The Beast; Iceman]; The Human Torch; Juggernaut
- Reprints
- Script
- Stan Lee
- Pencils
- Jack Kirby (layouts); Werner Roth
- Inks
- Joe Sinnott
- Letters
- Sam Rosen
- Genre
- superhero
- Characters
- The X-Men [Professor X; Cyclops; Marvel Girl [Jean Grey]; The Angel; The Beast; Iceman]; Juggernaut; Human Torch
- Synopsis
- Juggernaut has invaded the mansion and the X-Men struggle to take down Xavier's unstoppable half-brother. The Human Torch lends a hand and Professor X is able to bring his brother down.
- Reprints
- Pencils
- Jack Kirby
- Inks
- Wally Wood
- Letters
- Sam Rosen
- Genre
- superhero
- Characters
- The X-Men [Professor X; Cyclops; Marvel Girl [Jean Grey]; The Angel; The Beast; Iceman]; Sentinels
- Reprints
- Script
- Stan Lee
- Pencils
- Jack Kirby (layouts); Werner Roth (pencils)
- Inks
- Vince Colletta
- Letters
- Artie Simek
- Genre
- superhero
- Characters
- 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
- Synopsis
- After the battle with the Juggernaut, Xavier sends the X-Men on vacation. Prof. X calls for a televised debate with anthropologist Dr. Trask, who has spoken out against the mutant menace. During the broadcast, Trask unveils his Sentinels, robots built to capture and nullify mutants. The Sentinels proclaim themselves superior to humans and prepare to take over. Xavier calls his X-Men to battle the Sentinels. When one of their number falls, the giant robots capture Trask and return to their base. The X-Men follow and find a hidden complex complete with devastating weaponry.
- Reprints
- Pencils
- Jack Kirby
- Inks
- Dick Ayers (signed)
- Letters
- Sam Rosen
- Genre
- superhero
- Characters
- The X-Men [Professor X; Cyclops; Marvel Girl [Jean Grey]; The Angel; The Beast; Iceman]; Sentinels
- Reprints
- Script
- Stan Lee
- Pencils
- Jack Kirby (layouts); Werner Roth (pencils)
- Inks
- Dick Ayers
- Letters
- Artie Simek
- Genre
- superhero
- Characters
- 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
- Synopsis
- The X-Men invade the Sentinel's underground complex but are captured. The Beast is taken before the Sentinel's leader, Master Mold, and has his mind probed. Master Mold commands Trask to make an army of Sentinels so they can take over the world.
- Reprints
- Pencils
- Jack Kirby (signed)
- Inks
- Dick Ayers (signed)
- Letters
- Sam Rosen
- Genre
- superhero
- Characters
- The X-Men [Cyclops; Marvel Girl [Jean Grey]; The Angel; The Beast; Iceman]; Master Mold
- Reprints
- Script
- Stan Lee
- Pencils
- Jack Kirby (layouts); Werner Roth (pencils)
- Inks
- Dick Ayers
- Letters
- Artie Simek
- Genre
- superhero
- Characters
- The X-Men [Professor X; Cyclops; Marvel Girl [Jean Grey]; The Angel; The Beast; Iceman]; Sentinels; Master Mold; Dr. Bolivar Trask (death)
- Synopsis
- With the X-Men captured, Xavier heads back to investigate a fallen Sentinel to try and figure out what stopped it. The X-Men escape and battle the Sentinels, but it is the timely intervention of Professor X and the self-sacrifice of Dr. Trask that stops Master Mold and saves the day.
- Reprints
- Pencils
- Jack Kirby
- Inks
- Dick Ayers
- Letters
- Sam Rosen
- Genre
- superhero
- Characters
- The X-Men [Professor X; Cyclops; Marvel Girl [Jean Grey]; The Angel; The Beast; Iceman]; Magneto's shadow
- Reprints
- Script
- Stan Lee
- Pencils
- Jack Kirby (p. 1 & layouts, pp. 2–20); Werner Roth (pp. 2–20)
- Inks
- Dick Ayers
- Letters
- Artie Simek
- Genre
- superhero
- Characters
- The X-Men [Professor X; Cyclops; Marvel Girl [Jean Grey]; The Angel; The Beast; Iceman]; Magneto; Mr. Worthington; Mrs. Worthington
- Synopsis
- In the aftermath of their battle with the Sentinels, Hank, Bobby and Scott are taken to the hospital with injuries. Iceman is delirious in a coma but his companions recover quickly. When Warren's parents call and say they are dropping by for a visit, Angel flies back to the mansion where he is attacked by a mysterious stranger. Xavier and Cyclops, worried with no word from Angel, also return home and are attacked. The Beast and Jean are the last to show up and are also taken down. As Warren's parents arrive at the mansion, they are greeted by Magneto.
- Reprints
- Pencils
- Werner Roth; Jack Kirby ? (alterations)
- Inks
- Sol Brodsky
- Letters
- Sam Rosen
- Genre
- superhero
- Characters
- The X-Men [Professor X; Cyclops; Marvel Girl [Jean Grey]; Angel; Beast; Iceman]; Magneto
- Reprints
Disputed penciler credit--Jack Kirby (layouts) Werner Roth (pencils) per Rich Donnelly, Steve Whitaker, and Bob Ford. Bob Ford asserts that someone other than Jack Kirby or Dick Ayers modified Magneto's face. Nick Caputo believes that the Magneto figure was pencilled by Kirby and the rest of the cover by Roth (GCD Error List 29 March 2007). Sol Brodsky inking credit added per Nick Caputo, Jan 1, 2011. Nick adds that according to Mark Evanier, Kirby rarely, if ever, provided cover layouts for other artists.
Credits from print indexes vary. The Official Marvel Index to the X-Men (Olshevsky 1987) attributed pencils to Roth, inks to Ayers. The Official Marvel Index to the X-Men (Ward 1994) attributed layouts to Kirby, pencils to Roth, inks to Ayers. Official Index to the Marvel Universe (Vandal et al. 2009) attributed pencils to Kirby.
- Script
- Stan Lee
- Pencils
- Werner Roth
- Inks
- Dick Ayers
- Letters
- Artie Simek
- Genre
- superhero
- Characters
- The X-Men [Professor X; Cyclops; Jean Grey; The Angel; The Beast; Iceman]; Mr. Worthington; Mrs. Worthington; Magneto (villain); The Toad (villain); Stranger (cameo)
- Synopsis
- With the rest of the X-Men captured in a lead balloon, it is up to an injured Iceman to battle Magneto on his own. Once the X-Men escape Magento's trap, Professor X calls the Stranger, who arrives on earth to collect his former captives.
- Reprints
- Pencils
- Werner Roth; Marie Severin (alterations)
- Inks
- Dick Ayers; Marie Severin (alterations)
- Letters
- Sam Rosen
- Genre
- superhero
- Characters
- The X-Men [Cyclops; Marvel Girl [Jean Grey]; The Angel; The Beast; Iceman]; Mimic
- Reprints
Alterations on Mimic's wings and hands by Marie Severin, Per Nick Caputo, June 2012.
- Script
- Stan Lee
- Pencils
- Werner Roth
- Inks
- Dick Ayers
- Letters
- Artie Simek
- Genre
- superhero
- Characters
- 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)
- Synopsis
- Bobby and Hank tussle with mysterious Calvin Rankin, who beats them by mimicking their powers. Calvin then has an encounter with Jean at a restaurant. Realizing he is dealing with the X-Men, Calvin follows Jean home and asks to join them. Once he has absorbed all of their powers, he battles them and captures Jean. The team follows him to his hideout deep in an old mine. Mimic uses his powers to uncover a machine his father built that will allow him to keep the combined powers for good. Xavier allows Mimic to use the machine which doesn't give him powers but strips his mimic powers away.
- Reprints
- Pencils
- Werner Roth
- Inks
- Dick Ayers
- Letters
- Sam Rosen
- Genre
- superhero
- Characters
- The X-Men [Professor X, Cyclops, Marvel Girl, The Angel, The Beast, Iceman]; Lucifer; The Blob; Unus
- Reprints
- Script
- Roy Thomas
- Pencils
- Werner Roth
- Inks
- Dick Ayers
- Letters
- Artie Simek
- Genre
- superhero
- Characters
- The X-Men [Professor X; Cyclops; Marvel Girl [Jean Grey]; The Angel; The Beast; Iceman]; Lucifer; the Blob; Unus; The Supreme One
- Synopsis
- Story of how Prof. X lost the use of his legs.
- Reprints
- Pencils
- Werner Roth
- Inks
- Dick Ayers
- Genre
- superhero
- Characters
- The X-Men [Professor X; Cyclops; Marvel Girl; The Angel; The Beast; Iceman]; Lucifer
- Reprints
Disputed penciler and inker credits; Werner Roth pencils with Dick Ayers inks per Carl Gafford and Nick Caputo; Werner Roth pencils and inks per Steve Whitaker. Original indexer cited Jack Kirby as layout artist.
- Script
- Roy Thomas
- Pencils
- Werner Roth
- Inks
- Dick Ayers
- Letters
- Artie Simek
- Genre
- superhero
- Characters
- The X-Men [Professor X; Cyclops; Marvel Girl; The Angel; The Beast; Iceman]; Lucifer; the Supreme One
- Reprints
- Pencils
- Werner Roth
- Inks
- Dick Ayers
- Letters
- Sam Rosen
- Genre
- superhero
- Characters
- The X-Men [Professor X; Cyclops; Marvel Girl [Jean Grey]; The Beast; The Angel; Iceman]; Count Nefaria; Unicorn; Eel; Porcupine; Scarecrow; Plant Man
- Reprints
- Script
- Roy Thomas
- Pencils
- Werner Roth
- Inks
- Dick Ayers
- Letters
- Artie Simek
- Genre
- superhero
- Characters
- 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
- Synopsis
- Trying once again to take a vacation, the X-Men are individually drawn to Central Park where they encounter phantom versions of themselves. One by one, they fall to five super powered villains. The X-Men are brought to Count Nefaria's fortress and he tries to convince them to join his plot to steal Washington, D.C., and hold it for ransom.
- Reprints
Continued in X-Men #23.
- Pencils
- Werner Roth
- Inks
- Dick Ayers
- Letters
- Sam Rosen
- Genre
- superhero
- Characters
- The X-Men [Cyclops; Marvel Girl [Jean Grey]; The Angel; The Beast; Iceman]; Eel; Porcupine; Plant Man; Unicorn; Scarecrow
- Reprints
- Script
- Roy Thomas
- Pencils
- Werner Roth
- Inks
- Dick Ayers
- Letters
- Artie Simek
- Genre
- superhero
- Characters
- 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
- Reprints
Professor X walks with the aid of metal braces. General Fredericks and Colonel Hendershoot, unnamed here, confirmed by The Official Marvel Index To The X-Men.
- Pencils
- Werner Roth (signed)
- Inks
- Dick Ayers (signed)
- Letters
- Sam Rosen
- Genre
- superhero
- Characters
- The X-Men [Cyclops; Marvel Girl [Jean Grey]; The Angel; The Beast; Iceman]; Locust [August Hopper]
- Reprints
Pencil credits per Nick Caputo, August 2012. Rich Donnelly originally had Jack Kirby listed as layout artist.
- Script
- Roy Thomas
- Pencils
- Werner Roth
- Inks
- Dick Ayers
- Letters
- Sam Rosen
- Genre
- superhero
- Characters
- The X-Men [Professor X; Cyclops; Marvel Girl [Jean Grey]; The Angel; The Beast; Iceman]; Ted Roberts; The Locust [August Hopper]
- Reprints
- Script
- ?
- Letters
- typeset
Inside back cover. List of other Marvel Essentials books available.
- Script
- ?
- Pencils
- Bruce Timm (signed as B. T.)
- Inks
- Bruce Timm (signed as B. T.)
- Colors
- Marie Javins
- Letters
- Jon Babcock
- Characters
- The X-Men [Professor X; Cyclops; Marvel Girl [Jean Grey]; The Beast; The Angel; Iceman]
Back cover. Same design as front with different illustration and teaser for the issue.