Adapted from the short story "The Frost Giant's Daughter" by Robert E. Howard.
This story exists in several different versions. The original version was published in Savage Tales #1, 11 pages in black and white. The second version was published in Conan the Barbarian (Marvel, 1970 series) #16 with an extra splash page, in total 12 pages in color (with some nudity covered up). The third version was published in Savage Sword of Conan (Marvel, 1974 series) #1, 12 pages in black and white (original black-and-white version plus the extra splash page with ink washes applied).
Next appearance in Fantastic Four (Marvel, 1961 series) #151. Rosen letters per Haydn.
A presentation of the characters.
Next appearance of Man-Thing in Astonishing Tales (Marvel, 1970 series) #12.
Everett provided some alterations on character faces. Info per Nick Caputo. The next chapter, "The Return" was never completed or published. This is the only appearance of Black Brother.