The X-Men #49 - Who Dares Defy The Demi-Men?
ACTION COMICS #23 (April, 1940)
Serval Industries, Virginia; ex-X-Factor Investigações sede, Starjammer; Instituto Xavier para Estudos Avançados, Salem Center, Westchester County, New York; Genosha; X-Factor HQ, Washington DC, Maryland; Mutant Research Center, Ilha Muir;
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