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 1974," Federal Reserve Bulletin (March 1974) : 127-127. https://fraser.stlouisfed.org/title/62/item/21471/toc/151613 , accessed on March 28, 2024.