- Pencils
- ? (photography)
- Inks
- ? (photography)
- Letters
- typeset
- First Line of Dialogue or Text
- Tired of being 'skinny'?
Inside front cover. Ad for a weight gain product.
- Script
- Arnold Drake (credited)
- Pencils
- Don Heck (credited) (sourced) (breakdowns); Werner Roth (credited) (finished art)
- Inks
- John Tartaglione (credited)
- Colors
- ?
- Letters
- Herb Cooper (credited)
- First Line of Dialogue or Text
- Eerie feeling--returning to the house that was our headquarters!
- Genre
- superhero
- Characters
- X-Men: Angel [Warren Worthington III]; Beast [Hank McCoy]; Cyclops [Scott Summers]; Iceman [Bobby Drake]; Marvel Girl [Jean Grey]
Lorna Dane (introduction); Magneto [Erik Lehnsherr] (cameo flashback); Mesmero [Vincent] (villain, introduction); Demi-Men (villain; introduction)
- Universe
- Marvel : mainstream
- Synopsis
- Angel, back at the X-Mansion, learns that Cerebro is active and has detected a high level of mutant activity. Angel contacts Marvel Girl to alert her to his findings and she rounds up the X-Men to search for the heightened source of the mutant activity. As the X-Men search, Iceman is left behind to keep an eye out on a stranger he recently rescued.
- Reprints
X-Men rejoined as a team.
- Script
- Arnold Drake (credited)
- Pencils
- Werner Roth (credited)
- Inks
- John Verpoorten (credited)
- Colors
- ?
- Letters
- Irv Watanabe (credited as I. Watanabe)
- First Line of Dialogue or Text
- That nuclear pile is getting ready to blow!
- Genre
- superhero
- Characters
- Beast [Hank McCoy] (origin beginning, as baby); Edna McCoy (also in flashback); Norton McCoy (also in flashback); Robert McCoy (introduction); Paul Martin (introduction); John
- Universe
- Marvel : mainstream
- Reprints
- in Amazing Adventures (Marvel, 1970 series) #17 (March 1973) [pages 2-5]
which is reprinted- in Strange (Editions Lug, 1970 series) #50 (5 février 1974)
- in Spidey (Editions Lug, 1979 series) #66 (10 juillet 1985)
- in X-Men: Mutations (Marvel, 1996 series) ([December] 1996) [pages 2-5]
- in Marvel Special (Marvel Italia, 1994 series) #12 (Novembre 1997) [abridged]
- in Marvel Masterworks: The X-Men (Marvel, 2003 series) #5 ([August] 2005)
- in Essential Classic X-Men (Marvel, 2006 series) #2 (2006) [black & white]
- in The X-Men Omnibus (Marvel, 2009 series) #2 (2011)
- in Marvel Classic (Panini France, 2011 series) #6 (avril 2012)
- in X-Men Epic Collection (Marvel, 2014 series) #3 - The Sentinels Live (2018)
The Origins of the Uncanny X-Men! part 12, origin of the Beast part 1, page 1 of this story is not reprinted in the Amazing Adventures #17 and X-Men: Mutations #nn reprints.
- Script
- Stan Lee (credited as Smiley); ?
- Pencils
- ?
- Inks
- ?
- Colors
- ?
- Letters
- typeset
- Feature Logo
- Characters
- Beast
Includes Stan's Soapbox, Items, and The Mighty Marvel Checklist.
- Script
- ?
- Pencils
- Werner Roth (illustration)
- Inks
- John Tartaglione (illustration)
- Colors
- ?
- Letters
- Sam Rosen; typeset
- Characters
- Angel; Beast; Cyclops; Iceman; Marvel Girl
- Reprints
Letters from: George Winston, Corinne C. Sherton, Tom Flynn, Tony Isabella, Colin Sievers, Vic Rosello, Aaron Hamilton, Tom Brines, Michael Maida, and Gerry McCartor; Know Ye These, the Hallowed Ranks of Marveldom.
- Pencils
- ?
- Inks
- ?
- Colors
- ?
- Letters
- ?
- First Line of Dialogue or Text
- Now in full color!
- Genre
- superhero
- Characters
- Spider-Man; Green Goblin
Promo for the Spectacular Spider-Man title.
- Pencils
- ?
- Inks
- ?
- Letters
- typeset
- First Line of Dialogue or Text
- Good news for you who want to make extra money easily!
Inside back cover. Ad for the Creative Card Company.
- Pencils
- ?
- Inks
- ?
- Colors
- ?
- Letters
- typeset
- First Line of Dialogue or Text
- We're looking for people who like to draw
- Characters
- Norman Rockwell
Back cover. Ad for the Famous Artists School.