- Script
- Roy Thomas (credited)
- Pencils
- Werner Roth (credited)
- Inks
- Herb Trimpe
- Colors
- ?
- Letters
- ?
- Genre
- super-héros (superhero)
- Characters
- Professor X [Charles Xavier]; Cyclops [Scott Summers] (origin conclusion); Living Diamond [Jack Winters]
- Synopsis
- The Living Diamond is blasted into atoms in his attempt to destroy Professor X and Scott Summers. Afterward, Prof. X asks Scott to be the first member of his fledgling group whose goal is to create trust between humans and mutants.
- Reprints
Scott is given a costume that includes a ruby quartz visor to help control his optic blasts.
- Pencils
- Jean Frisano
- Inks
- Jean Frisano
- Colors
- ?
- Genre
- super-héros (superhero)
- Characters
- La Vision; La Sorcière Rouge; Magnéto
- Reprints
Quatrième de couverture [Back cover]
- Pencils
- Dave Cockrum (signed)
- Inks
- Dave Cockrum (signed)
- Colors
- Paty Cockrum
- Letters
- typeset
- Genre
- super-héros (superhero)
- Characters
- The Futurians [Sunswift; Werehawk; Mosquito; Silkie; Avatar; Silver Shadow; Terrayne; Blackmane]
- Reprints
Quatrième de couverture [Back cover]
- Pencils
- Christian Goussale (peinture)
- Inks
- Christian Goussale (peinture)
- Colors
- Christian Goussale (peinture)
- Letters
- typeset
- Genre
- super-héros (superhero)
- Characters
- X-Men [Diablo; Angel; Tornade]; Ka-Zar; Zabu
- Reprints
Quatrième de couverture [Back cover]