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| - He left there in 1977 to became a freelance illustrator and author; to date he has nearly forty book titles to his credit, and his illustrations have appeared on scores of book jackets, book interiors and in magazines such as National Geographic, Reader's Digest, Scientific American, Smithsonian, Analog, Starlog, Air & Space, Sky & Telescope, Newsweek, Natural History, Discover, GEO and others.Mil
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