Book excerpt: Without even thinking about it,Mama Seeton puckered her lips and whistled.It was not a loud whistle.Or a fancy whistle. Just a simple two-note whistle. When Mama Seeton whistles, her children run home for chocolate cake, hugs, kisses, and shared memories. But as time passes, they travel farther and farther away from the familiar sound. Can mama's whistle be heard all over the world, and bring her children home one more time? Newbery Award-winning author Jerry Spinelli's sweet lyrical text and New York Times bestselling illustrator LeUyen Pham's charming illustrations show the timeless love between a mother and her children.