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 1957," Federal Reserve Bulletin (March 1957) : 83-83. https://fraser.stlouisfed.org/title/62/item/21267/toc/389016 , accessed on March 28, 2024.