Sandra Boynton

Sandra Keith Boynton is a popular American humorist, songwriter, children's author and illustrator. Boynton has written and illustrated more than forty books for both children and adults, as well as over four thousand greeting cards, and four music albums. Although she does not license her characters to be redrawn or adapted, she has herself designed—for various companies—calendars, wallpaper, bedding, stationery, paper goods, clothing, jewelry, and plush toys. —Wikipedia