Sherri Mandell won a National Jewish Book Award for The Blessing of a Broken Heart. She is the author of several children's picture books, including The Best Treasure and The Elephant in the Sukkah. She is the co-founder of the Koby Mandell Foundation. She lives in Israel. Viviana Garofoli was born in Buenos Aires, in a quiet, tree-lined neighborhood of the Capital. She studied Painting at the Nation School of Fine Arts, graduating in 1994. That same year, she published her first drawings as a children's illustrator. She has illustrated more than 100 children's books and worked with publishers in Argentina, Puerto Rico, Korea, Spain, and the United States. She lives near Buenos Aires with her husband and daughters.