Isol is an Argentinian author and illustrator of children's books. She has won the Astrid Lindgren Memorial Award, has twice been selected as a finalist for the Hans Christian Andersen Award, and has won a Golden Apple at the Bratislava Biennial of Illustration. With over 20 titles published in various languages, her specialty is narration through the dialogue between image and word. Isol lives with her family in Buenos Aires.

Lawrence Schimel is a full-time author, writing in both Spanish and English, who has published over 120 books in a wide range of genres. He is also a prolific literary translator. He lives in Madrid.