Giant-Size X-Men #1 (May, 1975)
The X-Men #49 - Who Dares Defy The Demi-Men?
Xavier Institute, Salem Center, Contea di Westchester, Stato di New York
Serval Industries, Virginia; ex X-Factor Investigations Sede, Predoni Stellari; Xavier Institute for Higher Learning, Salem Center, Contea di Westchester, New York; Genosha; X-Factor HQ, Washington DC, Maryland; Mutant Research Center, Muir Isola;