LIFETIME ACHIEVEMENT
2011	Harlan Ellison
2010	Samuel R. Delany
2009	Frederik Pohl
2008	Ray Bradbury
	GRAND MASTER AWARD
1995	John Clute & Peter Nicholls
	NONFICTION
2001	How We Became Posthuman, N. Katherine Hayles
1999	The Encyclopedia of Fantasy, John Clute & John Grant, eds.
1996	Science Fiction in the Twentieth Century, Edward James
1995	The Magic That Works: John W. Campbell and the American Response to Technology, Albert I. Berger
1994	L'Obscur objet d'un savoir, Roger Bozzetto
1991	Isaac Asimov, Donald M. Hassler
1990	The Last Frontier: Imagining Other Worlds, Karl Guthke
1989	Science Fiction, Fantasy, & Horror: 1988, Charles N. Brown & William G. Contento
1988	Jules Verne Rediscovered, Arthur B. Evans
1987	Origins of Futuristic Fiction, Paul Alkon
1986	Trillion Year Spree, Brian W. Aldiss with David Wingrove
1985	Some Kind of Paradise, Thomas D. Clareson
(tie)	Scientific Romance in Britain: 1890-1950, Brian Stableford
1984	Fantasy and Mimesis, Kathryn Hume
1983	The Entropy Exhibition: Michael Moorcock and the British 'New Wave' in Science Fiction, Colin Greenland
1983	Alien Encounters, Mark Rose
1982	The Logic of Fantasy, John Huntington
1980	Robert A. Heinlein: America as Science Fiction, H. Bruce Franklin
1979	The Known and the Unknown: the Iconography of Science Fiction, Gary K. Wolfe
1978	Future Tense: The Cinema of Science Fiction, John Brosnan
1977	The Creation of Tomorrow: Fifty Years of Magazine Science Fiction, Paul A. Carter