Hi,
Very good artist, in many ways, though his work tended to be more towards the mixed media stuff than it was original. Still the combination was quite vivid and strong.
He has a lot more work that is more sexual/sensual, than this stuff that he is better know for, via ELP's cover and similar works. His design for the film Alien was really nicely done, and something that film is not quite able to do or try, though at the time it made sense. Nowadays, with the ability to do this on computer and electronics, movie "sets" will get even better and more complicated than the landscapes that showed up at "Alien".
Nice work. RIP