Joanne Ryder studied journalism at Marquette University. For several years she was an editor of children's books in New York, before she quit to write full-time. Ryder is an award-winning author whose books offer a unique blend of poetry and science. Her Just for a Day series invites children into the world of wild animals, ranging from a sea otter to Tyrannosaurus rex. Ryder's book, The Snailżs Spell, won a New York Academy of Sciences Book Award. She has been named three times in the annual list of Outstanding Science Trade Books for Children by a joint committee of the Childrenżs Book Council and the National Science Teachers Association.
Amy Schwartz has written and illustrated many classic picture books, among them "Bea and Mr. Jones, " a Reading Rainbow feature; "Oma and Bobo; Annabelle Swift, Kindergartner; A Teeny Tiny Baby" (a "New York Times" Best Illustrated Book of the Year); "Some Babies, " its sequel; "How to Catch an Elephant;" and "The Boys Team, " a finalist among the "Riverbank Review's" "Books of Distinction." She lives with her husband, historian and critic Leonard Marcus, and their son, Jacob, in Brooklyn, New York.