Cover inks credit from Sinnott's personal records.
Pages 12 and 13 of the story were only half pages (per Michel Faber, June 10, 2006).
According to George Olshevsky's Thor Index Bill Everett inked portions of page 2 and 17-19. Nick Caputo agrees but notes Everett inked all of page 2. John Romita redrew Sif on pages 18-20.
First appearance of the Coals of the Cosmos.