Employment, Hours, and Earnings, United States, 1909-84 : Bulletin of the United States Bureau of Labor Statistics, No. 1312-12
United States. Bureau of Labor Statistics. "Employment, Hours, and Earnings, United States, 1909-84 : Bulletin of the United States Bureau of Labor Statistics, No. 1312-12," Employment and Earnings, United States (March 1985). https://fraser.stlouisfed.org/title/189/item/5434, accessed on March 28, 2024.