Considered the "Dean of Science Fiction," Robert A. Heinlein helped define the genre of science fiction-and more specifically, speculative fiction-as a serious form of social, political, and cultural commentary during the mid-20th century. Titles discussed in this volume include Heinlein's novels The Moon is a Harsh Mistress, Stranger in a Strange Land, and Podkayne of Mars, as well as a variety of his short stories and early pulp magazine appearances.