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-. "July 13, 1984," G.12.3 Industrial Production (1984-07-13) : 5-5. https://fraser.stlouisfed.org/title/55/item/59681/toc/472868 , accessed on April 23, 2024.