"Wangersky's great-great-grandfather crossed the continent in search of gold in 1849. William Castle Dodge was his name, and he was 22 years old. He wrote a diary of that eventful journey that comes into the author's hands 160 years later. And typically, quixotically, Wangersky decides to follow Dodge's westward trail across the great bulging middle of America, not in search of gold but something even less likely: that elusive thing called family....