Clark, Odis Carl , Hosea, Harold R. and Votava, George E. "Earnings in the Manufacture of Industrial Machinery, 1942, Part 3" in Earnings in the Manufacture of Industrial Machinery, 1942 : Bulletin of the United States Bureau of Labor Statistics, No. 720 (1943). https://fraser.stlouisfed.org/title/4282/item/500036, accessed on November 15, 2024.