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. "October 1948," Federal Reserve Bulletin (October 1948) : 82-82. https://fraser.stlouisfed.org/title/62/item/21166/toc/281513 , accessed on March 19, 2024.