Silly Tilly Mole can't remember why today is special. Is it because it's snowing and the wind is swirling colored snowflakes all around her? Or maybe it's the bright red something special in her mailbox that makes this a special day. Beginning Readers will enjoy discovering what Tilly forgot to rememeber in Lillian Hoban's third charming story about this delightfully silly character.Tilly Mole knows it's a special day, but she just can't remember...