Three By Heinlein: The Puppet Masters, Waldo, and Magic, Inc (Book Club Edition)

From www.nndb.com: Regarded as the most influential writer of modern science fiction, author Robert Heinlein is ranked as one of the four luminaries of the Golden Age of science fiction, along with Isaac Asimov, Theodore Sturgeon, and A. E. van Vogt. He is also credited with evolving science fiction as a genre from the gee-whiz gadgetry obsessions of Hugo Gernsback and the testosterone soaked pulp fiction of Robert E. Howard into an impressively diverse and sophisticated literature. Under the influence of Heinlein science fiction became a recognized vehicle for exploring major themes of human existence and for describing not just new technologies, but whole new realities, all while telling gripping tales of mystery, romance, and adventure. Even the idea of creating "future histories" and laying out the political, technological, and historical development of peoples and worlds (i.e. "world building") -- as a prelude to writing the novels and short stories to be set there -- had its start with Robert Heinlein. In all of the above, Heinlein set the new standard and other writers strove to follow.