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. "February 1965," Federal Reserve Bulletin (February 1965) : 101-101. https://fraser.stlouisfed.org/title/62/item/21362/toc/336199 , accessed on May 4, 2024.