United States. Bureau of Labor Statistics. "Wages and Hours of Labor in the Iron and Steel Industry in the United States, 1907 to 1912 : Bulletin of the United States Bureau of Labor Statistics, No. 151," Wages and Hours of Labor in the Iron and Steel Industry in the United States (1914). https://fraser.stlouisfed.org/title/3923/item/497571, accessed on December 20, 2024.