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 Avilés 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.