Explorers of the Infinite: Shapers of Science Fiction is a work of collective biography on the formative authors of the science fiction genre by Sam Moskowitz, first published in hardcover by the World Publishing Company in 1963, and reprinted in trade paperback in 1966. A photographic reprint of the original edition was issued in both hardcover and trade paperback by Hyperion Press in 1974. Most of its chapters are revised versions of articles that initially appeared in the magazines Satellite Science Fiction and Fantastic Science Fiction Stories from 1958-1960.The work presents the early history of the genre via a discussion of the lives and works of eighteen of its most important formative authors, followed by a more general discussion of more recent writers. Source: Wikipedia (en)