Let's-Read-and-Find-Out Science, Stage 1 is a 20-book series first released in 1960 with contributions by Helene J. Jordan, Jean Little, Edith Thacher Hurd, Aliki, Clyde Robert Bulla, Franklyn Mansfield Branley, Henrietta Bancroft, Richard G. Van Gelder, Judy Hawes, Holly Keller and 8 others.