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. "May 1973," Federal Reserve Bulletin (May 1973) : 125-125. https://fraser.stlouisfed.org/title/62/item/21461/toc/330040 , accessed on July 16, 2024.