Carmine Infantino, John Broome
Chris Claremont, Paul Smith
The Flash #106 - Menace of the Super-Gorilla / The Pied Piper of Peril!
The Uncanny X-Men #169 - Catacombs
Not Available
The Xavier Institute, Salem Center, Westchester County, New York State, (former) The Alley (beneath Manhattans surface), X-Factor Is sentient starship