This is a continuation of Stan Lee's and Jack Kirby's original The X-Men (Vol. 1). Beginning with issue #114 the descriptive "Uncanny" was added to the cover treatment but it wasn't until issue #142 that the volume's official name was permanently changed to Uncanny X-Men.
The title has had many creative influences over the years but Chris Claremont was probably the force that drove the title through many it its historic changes, truly bringing it from "the world strangest teens" into their new status a team of mutants fight in a "world that fears and hates them". During his legendary 15 year run he gave us character and stories such as Phoenix/Dark Phoenix, the Hellfire Club, the New Mutants, X-Factor, the Mutant Massacre, Inferno and Jubilee and numerous other historic heroes and events. This epic run ended after editorial disputes in 1991.