Cover pencils credit changed to Jack Kirby by Mark Evanier, who says (via the GCD Errors list, August 2009) "As far as I know, Kirby never did layouts at Marvel for a cover where someone else did the pencils." Original indexer had "Jack Kirby (layouts); John Romita (pencils)."
The story offers little in the way of explanation as to exactly why an immortal from Asgard is trying to conquer the future earth.
Letters from Peter Mancuso, Patrick Draine, Michael Arden, Dan Leo, and Andy Booth. Includes a house ad for Fantasy Masterpieces #1.