United States. Bureau of Labor Statistics. "Wages and Hours of Labor in the Slaughtering and Meat-Packing Industry, 1925 : Bulletin of the United States Bureau of Labor Statistics, No. 421," Wages and Hours of Labor in the Slaughtering and Meat-Packing Industry (January 1927). https://fraser.stlouisfed.org/title/3926/item/493181, accessed on January 3, 2025.