The Uncanny X-Men #169 - Catacombs
X-Men #1 (September, 1963)
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Leader of mutant race, adventurer, headmaster, former student, radio announcer
The Xavier Institute, Salem Center, Westchester County, New York State, (former) The Alley (beneath Manhattans surface), X-Factor Is sentient starship
Xavier Institute, Salem Center, Westchester County, New York