Carl F. Taeusch, Nearing, Scott, Giorgio Mortara, Edward Motley Pickman, J. H. Levy, Giffen, Robert Sir, Allen Willis Rucker, Howard Thorne Hovde, American Federation of Labor, Transvaal Chamber of Mines. Gold Producers' Committee, Chemnitz (Germany), Chamber of Commerce of the United States of America, American Association of Engineers · First published 1884
