United States. Bureau of Labor Statistics. "Wages and Hours of Labor in the Slaughtering and Meat-Packing Industry, 1931 : Bulletin of the United States Bureau of Labor Statistics, No. 576,"
Wages and Hours of Labor in the Slaughtering and Meat-Packing Industry
(1933).
https://fraser.stlouisfed.org/title/3926/item/493184, accessed on April 19, 2025.