United States. Bureau of Labor Statistics , Clark, Lindley D. (Lindley Daniel), 1862-1951 , Callahan, Daniel F. (Daniel Francis) and Sharkey, Charles F., 1894-. "Labor Legislation, 1930 : Bulletin of the United States Bureau of Labor Statistics, No. 552," Labor Legislation of 1912-32 (1931). https://fraser.stlouisfed.org/title/3905/item/493128, accessed on December 21, 2024.