 It was the second such anthology assembled by the de Camps, following their earlier "3000 Years of Fantasy and Science Fiction" (1972).The book collects ten tales by various authors, with an overall introduction and bibliography by the de Camps.Elizabeth Haynes in "Library Journal" notes that as an attempt "to introduce readers to fantasy and science fiction, ... this 
collection, intended for a younger age group then [sic] Asimov's "Tomorrow's Children" (Doubleday, 1966), will find a place in most collections."