- Script
- Stan Lee (credited)
- Pencils
- Jack Kirby (credited)
- Inks
- Vince Colletta (credited)
- Colors
- ?
- Letters
- Sam Rosen (credited)
- First Line of Dialogue or Text
- I must find the stunning Sif!
- Feature Logo
- Genre
- superhero; fantasy-supernatural
- Characters
- Thor; Sif; Odin; Pluto; Mutates (introduction); The Keeper of the Antiquities of Asgard (introduction); Adam Warlock (named later, currently in cocoon)
- Reprints
- in Hit Comics Thor (BSV - Williams, 1971 series) #204
- in Il Mitico Thor (Editoriale Corno, 1971 series) #62 (28 Agosto 1973)
- in Spider-Man Comics Weekly (Marvel UK, 1973 series) #133 (30 August 1975) [pages 1-9], #134 (6 September 1975) [pages 10-20. Page 10 repurposed new title/credits splash page.]
- in Thor le fils d'Odin (Arédit-Artima, 1979 series) #4 - Thor aux enfers (3ème trimestre 1979)
- in Essential Thor (Marvel, 2001 series) #3 ([November] 2006) [black & white]
- in Marvel Masterworks: The Mighty Thor (Marvel, 2003 series) #8 ([February] 2009)
- in Marvel Classic (Panini France, 2011 series) #12 (octobre 2013)
- in Thor Epic Collection (Marvel, 2013 series) #4 - To Wake the Mangog (2015)
- in The Mighty Thor Omnibus (Marvel, 2010 series) #3 (2017)
This story continues from Fantastic Four (Marvel, 1961 series) #67. First appearances of Mutates and the Keeper of the Antiquities of Asgard.
- Script
- Stan Lee ?
- Pencils
- Jack Kirby (illustrations)
- Inks
- Vince Colletta (illustrations)
- Colors
- ?
- Letters
- Sam Rosen; typeset
- Feature Logo
- Characters
- Thor
- Reprints
Letters of comment from readers John Breden, Sandi L. Kaiser, Russell Engebretson, Craig Battmer, Don Bernard, and Paul A. Ellis.
Illustrated with three panels from earlier comics.