United States. Bureau of Labor Statistics. "Wages and Hours of Labor in the Iron and Steel Industry, 1929 : Bulletin of the United States Bureau of Labor Statistics, No. 513,"
Wages and Hours of Labor in the Iron and Steel Industry in the United States
(1930).
https://fraser.stlouisfed.org/title/3923/item/493173, accessed on April 2, 2025.
@FedFRASER