Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "Industry Groupings, Seasonally Adjusted," in Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "May 1965," Federal Reserve Bulletin (May 1965) : 95-95. https://fraser.stlouisfed.org/title/62/item/21365/toc/313386 , accessed on April 23, 2024.