Eight-hour series
American Federation of Labor
by Geo. E. McNeill
American Federation of Labor 1915 5th ed Eight-hour series no. 1
所蔵館2館
by Lemuel Danryid
American Federation of Labor c1899 4th ed Publication of the American Federation of Labor , Eight-hour series no. 3
所蔵館1館
American Federation of Labor c1899 3rd ed Publication of the American Federation of Labor , Eight-hour series no. 3
by George Gunton
American Federation of Labor 1889 3rd ed Eight-hour series no. 2
所蔵館3館
