Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "Production Worker Employment in Manufacturing Industries," in Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "March 1973," Federal Reserve Bulletin (March 1973) : 184-184. https://fraser.stlouisfed.org/title/62/item/21459/toc/203010 , accessed on April 25, 2024.