The fifties were arguably the golden age of science fiction, and here are a few highly collectible novels from that era by such giants as Isaac Asimov & Ray Bradbury. The first six are from the bookseller L.W. Currey. They have an especially wide range of first edition science fiction and fantasy books. The last two are from my own library.
Isaac Asimov THE STARS, LIKE DUST. Garden City: Doubleday & Company, Inc., 1951
Clarke, Arthur C. THE CITY AND THE STARS. New York: Harcourt, Brace and Company, [1956]. Cover design by George Salter.
Asimov, Isaac. THE CURRENTS OF SPACE. Garden City: Doubleday & Company, Inc., 1952. Jacket design by George Giusti.
Asimov, Isaac. THE MARTIAN WAY AND OTHER STORIES. Garden City: Doubleday & Company, Inc., 1955.
Robert A. Heinlein. BETWEEN PLANETS. New York:Charles Scribner's Sons, 1951.
Bradbury, Ray. THE ILLUSTRATED MAN. First British edition. London: Rupert Hart-Davis, 1952.
I, Robot by Isaac Asimov. 1950. This is my copy. It's a facsimile edition from The First Edition Library. An actual first edition of this novel is really pricey, usually in the thousands of dollars..
Shambleau and Others by C.L.Moore 1953. My "First Edition Library" reprint of the First Edition from 1981.