Thirty years of labor, 1859 to 1889 : in which the history of the attempts to form organizations of workingmen for the discussion of political, social, and economic questions is traced : the National Labor Union of 1866, the Industrial Brotherhood of 1874, and the order of the Knights of Labor of America and the World : the chief and most important principles in the preamble of the Knights of Labor discussed and explained, with views of the author on land, labor and transportation : illustrated with portrait of author and choicest gems of art /