United States. Bureau of Labor Statistics. "Wages and Hours of Labor in the Iron and Steel Industry, 1907 to 1915 : Bulletin of the United States Bureau of Labor Statistics, No. 218," Wages and Hours of Labor in the Iron and Steel Industry in the United States (October 1917). https://fraser.stlouisfed.org/title/3923/item/476888, accessed on August 4, 2024.