When They Come from Space by Mark Clifton

Hardcover. Condition: Very Good, Dust Jacket: Good. 1962. Doubleday. Book Club Edition.

Beware the starmen bearing gifts. When they came from space they were not at all what some people expected them to be. No little green men, bug-eyed monsters, eight-tentacled slugs.. Nothing of the sort: they were tall, well-built, physically more attractive than any Hollywood film star. Earth succumbed. Why was it then that Ralph Kennedy, the man in charge of the Extraterrestrial Life Department felt an urgent sense of danger?