Wages and hours of labor in the metal trades in Massachusetts, 1914-1919 ... September, 1920. - Massachusetts. Department of Labor and Industries (Boston, Wright & Potter Prining Company, state printers, 1920)
Part III of the Annual report on the statistics of labor for 1920.
At head of title: The commonwealth of Massachusetts. Department of Labor and Industries. E. Leroy Sweetzer, commissioner. Division of Statistics. Roswell F. Phelps, director.
Keywords: Wages -- Massachusetts; Hours of labor; Metal-workers -- Massachusetts