Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "Industry Groupings," in Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "August 1973," Federal Reserve Bulletin (August 1973) : 122-122. https://fraser.stlouisfed.org/title/62/item/21464/toc/130546 , accessed on March 28, 2024.