Renee Londner is the author of children's books including Ruby's Whistle and Stones for Grandpa, a Sydney Taylor Honor Book. Her stories have also appeared in magazines including Jewish Family, Shofar, and Spider. She lives in Connecticut.
Martha Avil├йs was born and raised in Mexico City. She has illustrated many children's books including Say Hello, Lily; The Shabbat Princess; and Stones for Grandpa.