Sylvester and the Magic Pebble by William Steig

One rainy day, Sylvester finds a magic pebble that can make all his wishes come true. But when a lion frightens him on his way home, Sylvester makes a wish with unexpected consequences. Will Sylvester find his way back to his family? Winner of the 1970 Caldecott Medal, this modern classic is full of warmth, humour and joy.