Unearthly Visions
(2002 - Greenwood Press) 
[-BELOW THE LINE-] (edited by Gary Westfahl, George Slusser & Kathleen Church Plummer) Catchy title - no art. This is a collection of un-illustrated essays, subtitled APPROACHES TO SCIENCE FICTION AND FANTASY ART. Some seminal artists are focused on, but most of the writings are overviews of the history and/or themes of these sub-genres of the art world.
other Sci-Fi art collections
Planet Of The Apes Artist Tribute
Tomorrow And Beyond - Masterpieces Of Science Fiction Art
Worlds Beyond Time - Sci-Fi Art Of The 1970s
The New Visions - A Collection Of Modern Science Fiction Art
Infinite Worlds - The Fantastic Visions Of Science Fiction Art
2000 A.D. - Illustrations From The Golden Age Of Science Fiction Pulps
Collectors Press's Sci-Fi collections
Encyclopedia Of Science Fiction
One Hundred Years Of Science Fiction Illustration
Fantastic Science Fiction Art 1926-1954
A Pictorial History Of Science Fiction
Bradbury - An Illustrated Life
Alien Invasions! The History Of Aliens In Pop Culture
Spacecraft In Fact And Fiction [BELOW THE LINE]
Science Fiction - An Illustrated History [BELOW THE LINE]
Science Fiction - The Illustrated Encyclopedia [BELOW THE LINE]
Space Wars - Fact And Fiction [BELOW THE LINE]
The Visual Encyclopedia Of Science Fiction [BELOW THE LINE]
Forrest J. Ackerman's World of Science Fiction [BELOW THE LINE]
Fantastic Planets [BELOW THE LINE]
Alternate Worlds - The Illustrated History Of Science Fiction [BELOW THE LINE]
The Science In Science Fiction [BELOW THE LINE]
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