Board of Governors of the Federal Reserve System (U.S.), 1935-. "Industry Groupings, Seasonally Adjusted," in Board of Governors of the Federal Reserve System (U.S.), 1935-. "October 15, 1982," G.12.3 Industrial Production (1982-10-15) : 6-6. https://fraser.stlouisfed.org/title/55/item/59660/toc/472464 , accessed on May 3, 2024.