Distributed to newstands in May 1964. This issue includes 10 pages of paid advertisements.
Distribution date from Joseph Marek's Marvel Comics Group history website.
in Essential Iron Man (Marvel, 2000 series) #1 (November 2000) [black and white]
in Marvel Masterworks: The Invincible Iron Man (Marvel, 2003 series) #2 [Regular Edition] ([May] 2005)Letters credit from George Olshevsky's Marvel Comics Index.
in Marvel Collectors' Item Classics (Marvel, 1965 series) #14 (April 1968)
in Essential Iron Man (Marvel, 2000 series) #1 (November 2000) [black and white]
in Marvel Masterworks: The Invincible Iron Man (Marvel, 2003 series) #2 [Regular Edition] ([May] 2005)Unicorn next appears in a cameo in Fantastic Four Annual (Marvel, 1963 series) #3 (1965), before appearing in X-Men (Marvel, 1963 series) #22 (July 1966).
Advertises Strange Tales (Marvel, 1951 series) #123 (August 1964) and Tales to Astonish (Marvel, 1959 series) #58 (August 1964). Printed between the pages of the Iron Man story.
from Mystic (Marvel, 1951 series) #39 (September 1955) [page 2; as "Pouf!"]Text story with illustration. Printed between the Iron Man story and the Tales of the Watcher story. Continues from last issue.
in Marvel Collectors' Item Classics (Marvel, 1965 series) #21 (June 1969)
in I Fantastici Quattro (Editoriale Corno, 1971 series) #61 (7 Agosto 1973)