By Dan Simmons ,
By Robert A. Heinlein ,
By Larry Niven ,
By Edgar Rice Burroughs ,
By Arthur C. Clarke ,
By Isaac Asimov ,
By Anne McCaffrey ,
By Lois McMaster Bujold ,
By Frederik Pohl ,
By Frank Herbert ,
By Orson Scott Card ,
By C.J. Cherryh ,
By Kim Stanley Robinson ,
By Iain M. Banks ,
By Barry B. Longyear ,
By Joan D. Vinge ,
By Tanith Lee ,
By Robert Silverberg ,
By Vernor Vinge ,
By Larry Niven , Jerry Pournelle ,
By Alan E Nourse ,
By James Tiptree ,
By David Brin ,
By A.C. Crispin ,
By Alan Dean Foster ,
By A. C. Crispin ,
or
