Employment and Earnings, United States, 1909-75 : Bulletin of the United States Bureau of Labor Statistics, No. 1312-10
United States. Bureau of Labor Statistics. "Employment and Earnings, United States, 1909-75 : Bulletin of the United States Bureau of Labor Statistics, No. 1312-10," Employment and Earnings, United States (1976). https://fraser.stlouisfed.org/title/189/item/522866, accessed on April 23, 2024.