Hours of great reading await, with tales from some of the 20th century's most renowned science fiction authors, Here are 25 science fiction stories (plus a bonus short-short):

UNKNOWN THINGS, by Reginald Bretnor

CAPTIVES OF THE FLAME, by Samuel R. Delany

EXPEDITER, by Mack Reynolds

ONE-SHOT, by James Blish

SHIPWRECK IN THE SKY, by Eando Binder

ZEN, by Jerome Bixby

LANCELOT BIGGS COOKS A PIRATE, by Nelson Bond

SENTIMENT, INC. , by Poul Anderson

THE ISSAHAR ARTIFACTS, by J. F. Bone

THE NEXT LOGICAL STEP, by Ben Bova

YEAR OF THE BIG THAW, by Marion Zimmer Bradley

EARTHMEN BEARING GIFTS, by Fredric Brown

HAPPY ENDING, by Fredric Brown and Mack Reynolds

LIGHTER THAN YOU THINK, by Nelson Bond

RIYA'S FOUNDLING, by Algis Budrys

ACCIDENTAL DEATH, by Peter Baily

AND ALL THE EARTH A GRAVE, by C. C. MacApp

DEAD RINGER, by Lester del Rey

THE CRYSTAL CRYPT, by Philip K. Dick

THE JUPITER WEAPON, by Charles L. Fontenay

THE MAN WHO HATED MARS, by Randall Garrett

NAVY DAY, by Harry Harrison

THE JUDAS VALLEY, by Robert Silverberg & Randall Garrett

NATIVE SON, by T. D. Hamm

JUBILEE, by Richard A. Lupoff

FINAL CALL, by John Gregory Betancourt