First Appearance of Valkyrie in the body of Barbara Norris.

Steve Englehart (w), Sal Buscema (p), Frank McLaughlin (i), Petra Goldberg (c), Artie Simek (l), Roy Thomas (e), The Defenders, Vol 1, #4 (New York: Marvel Comics, Feb 1973), 15.

Mark Gruenwald, et al. (w), Official Handbook of the Marvel Universe V-Z, Vol 1, #12 (New York: Marvel Comics, Dec 1983), 2.