Employment and Earnings Statistics for the United States, 1909-64 : Bulletin of the United States Bureau of Labor Statistics, No. 1312-2
United States. Bureau of Labor Statistics. "Employment and Earnings Statistics for the United States, 1909-64 : Bulletin of the United States Bureau of Labor Statistics, No. 1312-2," Employment and Earnings, United States (1964). https://fraser.stlouisfed.org/title/189/item/522861, accessed on April 23, 2024.