The Bark River valley in southeastern Wisconsin is a microcosm of the state's - indeed, of the Great Lakes region's - natural and human history. "The Bark River Chronicles" reports one couple's journey by canoe from the river's headwaters to its confluence with the Rock River and several miles farther downstream to Lake Koshkonong. Along the way, it tells the stories of Ice Age glaciation, the effigy mound builders, the Black Hawk War, early settlement...