Board of Governors of the Federal Reserve System (U.S.), 1935-. "Summary Groupings, Seasonally Adjusted," in Board of Governors of the Federal Reserve System (U.S.), 1935-. "October 16, 1984," G.12.3 Industrial Production (1984-10-16) : 13-13. https://fraser.stlouisfed.org/title/55/item/59684/toc/472929 , accessed on April 18, 2024.