First Appearance of Clea.

Stan Lee and Steve Ditko (w), Steve Ditko (p, i), Stan Goldberg (c), Artie Simek (l), Stan Lee (e), “The Domain of the Dread Dormammu,” Strange Tales, Vol 1, #126 (New York: Marvel Comics, 1961), 7.

Mark Gruenwald, et al. (w), Official Handbook of the Marvel Universe, Beast to Clea, Vol 2, #2 (New York: Marvel Comics, Jan 1986), 63.