| Issue | #4 |
| Published | March 1980 |
| Cover Price | 0.40 |
| Pages | 36 |
| Editing | Danny Fingeroth (reprint editor) |
| Characters | X-Men [Cyclops; Beast; Angel; Iceman; Marvel Girl]; Professor X; Vanisher |
| Genre | superhero |
| Pencils | Jack Kirby |
| Inks | Paul Reinman |
| Reprinted | from X-Men (Marvel, 1963 series) #2 (November 1963) |
| Characters | Vanisher; X-Men; Professor X |
| Genre | superhero |
| Script | Stan Lee; Jack Kirby |
| Pencils | Jack Kirby |
| Inks | Paul Reinman |
| Letters | Sam Rosen |
| Editing | Stan Lee |
| Reprinted | from X-Men (Marvel, 1963 series) #2 [pp. 12-22] |
| Characters | Jack O'Diamonds; Scott Summers; Professor X |
| Genre | superhero |
| Script | Roy Thomas |
| Pencils | Werner Roth |
| Inks | John Verpoorten |
| Letters | Sam Rosen |
| Editing | Stan Lee (original editor) |
| Notes | Origin of Cyclops part 3. |
| Reprinted | from X-Men (Marvel, 1963 series) #41 (February 1968) |