Angela Burke Kunkel is the author of Digging for Words, an ALA Notable Book and Kirkus Best Book of the Year. It also received the Americas Award and the International Latino Book Award for best English language title. She is also the author of Penguin Journey, called "stunning" in a starred review from Kirkus Reviews.

Claire Keane is the author-illustrator of Little Big Girl and Once Upon a Cloud and the illustrator of Paolo, Emperor of Rome by Mac Barnett and Why? by Adam Rex, among others. She is also known for her development art for the movies Tangled and Frozen. She studied at École Supérieure d'Arts Graphiques in Paris and now lives in Venice Beach, California with her kids.