Board of Governors of the Federal Reserve System (U.S.), 1935-. "Industry Groupings, Not Seasonally Adjusted," in Board of Governors of the Federal Reserve System (U.S.), 1935-. "August 15, 1986," G.12.3 Industrial Production (1986-08-15) : 7-7. https://fraser.stlouisfed.org/title/55/item/59709/toc/473326 , accessed on April 19, 2024.