Celebrate Marvel"s 70th anniversary by experiencing the tales of the world"s most-famous super heroes from the very beginning! The Marvel Masterworks have brought readers deluxe hardcover collections of Marvel"s classics from the Golden Age, Atlas Era, and the mighty Marvel Age, and now you can join in the Masterworks excitement with Marvel"s new, monthly Marvel Masterworks trade paperbacks. Borh with extraordinary talents and abilities, five teenage mutants gathered together under Professor Xavier to protect a world that fears and hates them. Ever expanding their ranks, these Children of the Atom combat the evils threatening both humans and mutants. They are the strangest super heroes of all - the X-Men! In this second volume, witness some of the earliest appearances of Juggernaut, Magneto, Mimic, and the Sentinels! Collects X-Men #11-21.