| Issue | #38 |
| Published | November 1967 |
| Cover Price | 0.12 |
| Pages | 36 |
| Editing | Stan Lee |
| Notes | Disputed penciler credit--Dan Adkins with assistance by John Romita on the Marvel Girl figure per Rich Donnelly, Nick Caputo, and the original indexer; Dan Adkins working alone per Steve Whitaker and Carl Gafford. |
| Characters | F: The X-Men (Angel, Beast, Marvel Girl); V: Blob, Vanisher, Factor Three |
| Genre | superhero |
| Pencils | Dan Adkins; John Romita? (Marvel Girl assist) |
| Inks | Dan Adkins |
| Notes | Disputed penciler credit--Dan Adkins with assistance by John Romita on the Marvel Girl figure per Rich Donnelly, Nick Caputo, and the original indexer; Dan Adkins working alone per Steve Whitaker and Carl Gafford. |
| Reprinted | in X-Men (Marvel, 1963 series) #86 |
| Characters | F: The X-Men (Angel, Beast, Cyclops, Iceman, Marvel Girl, Professor X); V: Mutant-Master, Changeling, Blob, Unus, Mastermind, Vanisher (Factor Three); GA: Banshee |
| Genre | superhero |
| Script | Roy Thomas |
| Pencils | Don Heck |
| Inks | George Roussos (George Bell) |
| Letters | Gaspar Saladino (L. P. Gregory) |
| Reprinted | in X-Men (Marvel, 1963 series) #86 (February 1974); in Marvel Special (Marvel Italia, 1994 series) #14 |
| Characters | GS: Fred Duncan; Professor X; Cyclops |
| Genre | superhero |
| Script | Roy Thomas |
| Pencils | Werner Roth |
| Inks | John Verpoorten |
| Letters | Sam Rosen |
| Notes | O: X-Men (beginning) |
| Reprinted | in Amazing Adventures (Marvel, 1979 series) #1 (December 1979); in Marvel Special (Marvel Italia, 1994 series) #3 |