| Issue | #39 |
| Published | December 1967 |
| Cover Price | $0.12 |
| Pages | 36 |
| Editing | Stan Lee |
| Characters | The X-Men (Angel, Beast, Cyclops, Iceman, Marvel Girl) |
| Genre | superhero |
| Pencils | George Tuska |
| Inks | George Tuska |
| Reprinted | in X-Men (Marvel, 1963 series) #87 |
| Characters | F: The X-Men (Angel, Beast, Cyclops, Iceman, Marvel Girl, Professor X); GS: Banshee; V: Mutant-Master (D), Changeling, Blob, Unus, Vanisher, Mastermind (Factor Three) |
| Genre | superhero |
| Script | Roy Thomas |
| Pencils | Don Heck |
| Inks | Vince Colletta |
| Letters | Artie Simek |
| Notes | X-Men get new costumes |
| Reprinted | in X-Men (Marvel, 1963 series) #87 |
| Characters | O: Cyclops (beginning); V: Jack O'Diamonds (I; Jack Winters); Professor X app.; Fred Duncan |
| Genre | superhero |
| Script | Roy Thomas |
| Pencils | Werner Roth |
| Inks | John Verpoorten |
| Letters | Al Kurzrok |
| Reprinted | in Amazing Adventures (Marvel, 1979 series) #2 (January 1980); in Marvel Special (Marvel Italia, 1994 series) #4 |