Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "Estimated Employment in Nonagricultural Establishments, by Industry Division," in Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "September 1947," Federal Reserve Bulletin (September 1947) : 88-88. https://fraser.stlouisfed.org/title/62/item/21153/toc/413146 , accessed on April 23, 2024.