Employment, Hours, and Earnings, United States, 1909-94 : Bulletin of the United States Bureau of Labor Statistics, No. 2445
United States. Bureau of Labor Statistics. "Employment, Hours, and Earnings, United States, 1909-94 : Bulletin of the United States Bureau of Labor Statistics, No. 2445," Employment and Earnings, United States (September 1994). https://fraser.stlouisfed.org/title/189/item/5437, accessed on May 3, 2024.