Distributed to newstands in February 1961. This issue includes 10 pages of paid advertisements.
Distribution date from Joseph Marek's Marvel Comics Group history website.
Cover inker confirmed by Nick Caputo via the GCD Errors list, December 2008. The original indexer had credited Ayers with a question mark.
in Creatures on the Loose (Marvel, 1971 series) #15 (January 1972)Narrated in the first person. This story is divided into two chapters: an untitled chapter one (6 pp) and chapter two—"Spragg" (7 pp). Spragg and Prof. Robertson next appear in Sensational She-Hulk (Marvel, 1989 series) #31 (September 1991). Job number from Tom Lammers and Ger Apeldoorn via the Atlas/Timely discussion group.
from Astonishing (Marvel, 1951 series) #53 (September 1956)
in HIP Comics (Classics/Williams, 1966 series) #19122 (1969) [oorspronkelijke titel: "Where Walks the Ghost"]
in Monsters on the Prowl (Marvel, 1971 series) #16 (April 1972)
in I Fantastici Quattro (Editoriale Corno, 1971 series) #117 (30 Settembre 1975)
in Fantomet (Semic, 1976 series) #3/1987 (uke 5 1987)
in Uncanny Tales (Alan Class, 1963 series) #23 (?)Job number from Tom Lammers and Ger Apeldoorn via the Atlas/Timely discussion group.
in Monsters on the Prowl (Marvel, 1971 series) #15 (February 1972)Narrated in the second person. Job number from Tom Lammers and Ger Apeldoorn via the Atlas/Timely discussion group.