Dear Peter, Dear Ulla is an imaginative and beautifully crafted historical middle-grade novel about two cousins who are fast friends even though they have never met. Letters fly back and forth between them, and although Ulla lives in Danzig, Germany, and Peter on a Mennonite farm in Saskatchewan, their lives become inextricably entwined through an intense, empathetic connection that plays out in the first months of World War Two.