IF (FRITZ LEIBER; KEITH LAUMER; H. A. HARTZELL; THEODORE L. THOMAS; ROBERT SCOTT; EDWARD WELLEN; RICHARD SHERIDAN; CHARLES V. DE VET; JIM HARMON; THEODORE STURGEON) If Worlds of Science Fiction: May 1962 | POHL, FREDERIK Pohlstars | STEAD, CHRISTINA The Salzburg Tales | POE, EDGAR ALLAN (EDITED BY GROFF CONKLIN) Ten Great Mysteries: The Great Mysteries of Edgar Allan Poe | POURNELLE, JERRY The Mercenary (John Christian Falkenberg Series) |