William Edward Joyce (born December 11, 1957) is an American author, illustrator, and filmmaker. His illustrations appeared on numerous New Yorker covers and his paintings are displayed at museums and art galleries. Joyce won an Academy Award for Best Animated Short Film with Brandon Oldenburg. (from Wikipedia, http://en.wikipedia.org/wiki/William_Joyce_writer)
He has written and illustrated over fifty children's books including George Shrinks, Santa Calls, Dinosaur Bob and his Adventures with the Family Lazardo, Rolie Polie Olie, The Leaf Men and the Brave Good Bugs and A Day with Wilbur Robinson.