Immigrants in industries. (In twenty-five parts)
United States. Immigration Commission (1907-1910); Dillingham, William Paul, 1843-1923; Lauck, W. Jett (William Jett), 1879-1949; Cance, Alexander E. (Alexander Edmond), 1874-; Millis, Harry A. (Harry Alvin), 1873-1948