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. "December 1975," Federal Reserve Bulletin (December 1975) : 132-132. https://fraser.stlouisfed.org/title/62/item/21492/toc/53435 , accessed on April 23, 2024.