Crockett Johnson, author of Harold and the Purple Crayon

who coined one of my favorite phrases from all of children's literature: "Then Harold remembered what the government likes to do in the desert. It likes to shoot off rockets." From Harold's Trip to the Sky

Also wrote, after Harold had a picnic, at which "There was only pie, but there were all nine kinds of pie that Harold liked best" and couldn't eat all the pies, that he drew up a "hungry moose and a deserving porcupine to finish them off."

Great stuff, for my childish mind.