"Illinois" . . "African Americans Employment Illinois Chicago." . . "Noirs américains Travail Illinois Chicago." . . "Viande Industrie Illinois Chicago." . . "Meat industry and trade Illinois Chicago." . . . . "African Americans Employment." . . "Meat industry and trade." . . "Stockyards Illinois Chicago." . . "Stockyards." . . . . . . . . . . . . . . "The Negro in the slaughtering and meat packing industry in Chicago"@en . "The Negro in the slaughtering and meatpacking industry in Chicago" . . . . . . . . . . . . . "The Negro in the slaughtering and meat-packing industry in Chicago"@en . "The Negro in the slaughtering and meat-packing industry in Chicago" . . . . . . "The negro in the slaughtering and meat-packing industry in Chicago" . "The negro in the slaughtering and meat-packing industry in Chicago"@en . . . . . . . . . "The negro in the slaughtering and meat-packing industry in chicago" . . . . . . . . . . "American labor-from conspiracy to collective bargaining.Coll" . "The negro in the slaughtering and meatpacking industry in Chicago" . . "Chicago (Ill.)" . .