In the early 20th century, science fiction (sf) stories were frequently published in popular magazines,[REF] with the Munsey Company, a major pulp magazine publisher, printing a great deal of science fiction [REF].
The new title immediately became successful, and demand for reprints of old favorites was such that Munsey decided to launch an additional magazine, Fantastic Novels, in July 1940, edited, like Famous Fantastic Mysteries, by Mary Gnaedinger [REF].