Professor X is dead! The X-Men have gone their separate ways! In the late 1960s, searching for a way to reinvigorate its poorest-selling super heroes, Marvel was trying anything and everything. With the title on the verge of cancellation, writer Roy Thomas and artist Neal Adams suddenly clicked and the rest is history! Their epic evolution of the X-Men defines the team to this day. Adams' lavish and dynamic visuals and Thomas' challenging and contemporary stories combined in a book that throbbed with the pulse of the times. Their iconic stories collected here introduce Cyclops' brother Havok, the vampiric villain Sauron, the Savage Land Mutates and X-Man-to-be Sunfire! Not to mention the Living Pharaoh, a classic team-up with Ka-Zar...and don't forget the return of Magneto! Collecting X-MEN (1963) #46-66, KA-ZAR (1970) #2-3 and MARVEL TALES (1964) #30. All Ages