For millions of Americans, Solomon D. Butcher's photographs epitomize the sod-house frontier. His late-nineteenth-century images from western Nebraska constitute the most extensive photographic record in existence of the generation that settled the Great Plains. The faces are unforgettable: jaunty bachelors and earnest husbands, Civil War veterans of both armies, spinster sodbusters and determined mothers, cowhands, farmhands, and former slaves--all...