Uncanny X-Men (Marvel, 1963 1st Series) #166
Story by Chris Claremont. Art by Paul Smith and Bob Wiacek.
It's the final battle between the sinister Brood and the Uncanny X-Men. But when the Earth heroes learn a startling secret about their mentor, Professor X, they discover that they may already be too late to save their home world. First appearance of Lockheed.
