"Many [concept designers] have been out working for 10 years and they have no personal artwork to show for it," says famed renderer/designer Scott Robertson. "About 90% of the time, studios will never release the rights to the artwork to be shown by the original artists."
Robertson and a group of designers have formed Design Studio Press to showcase that other ten percent, as well as designs produced off the clock, to readers worldwide. With categories like concept design, transportation design, creatures and characters, sci-fi, and others (check 'em all out here), the publishing house has an impressive array of titles. And when Syd Mead writes you a forward, you know you're pretty much the real deal.
The L.A. Times has an interview with Robertson here.