Moomin and the Winter Snow by Tove Jansson()
Winter has come to Moominvalley which means that it's time for Moomintroll's best friend, Snufkin, to travel south. All the excitement of the falling snow does nothing to comfort Moomintroll whose sadness at his friend's departure is movingly captured in Tove Jansson's illustrations. What will make him feel better? Gently exploring the nature of friendship, this is a picture book for all ages.