Franklyn M. Branley was the originator of the Let's-Read-and-Find-Out Science series and the author of close to 150 popular books about scientific topics for young readers of all ages. He was Astronomer Emeritus and former Chairman of the American Museum of Natural History-Hayden Planetarium.
Felicia Bond is both writer and illustrator of Tumble Bumble, The Day It Rained Hearts, the Poinsettia books, and many others. She painted the art for numerous other award-winning books, including those in the much loved If You Give . . . series and the contemporary classic Big Red Barn. She lived for many years in New York and currently lives in Santa Fe, New Mexico.