Ruth Heller (1923-2004) began her career designing wrapping paper, cocktail napkins, greeting cards, and coloring books. Her first book, Chickens Aren't the Only Ones, about egg-laying animals, was published in 1981. It was so successful that the sequel, Animals Born Alive And Well (1982), quickly followed. In 1983 and 1984, her third and fourth titles, The Reason for a Flower and Plants That Never Ever Bloom were published. Heller's next collection of books became a five-volume series on parts of speech, followed by her highly successful coloring book series, Designs for Coloring.