United States. Bureau of Labor Statistics. "Wages and Hours of Labor in the Slaughtering and Meat-Packing Industry, 1923 : Bulletin of the United States Bureau of Labor Statistics, No. 373," Wages and Hours of Labor in the Slaughtering and Meat-Packing Industry (May 1925). https://fraser.stlouisfed.org/title/3926/item/493019, accessed on March 27, 2025.