Board of Governors of the Federal Reserve System (U.S.), 1935-. "Market Groupings, Not Seasonally Adjusted," in Board of Governors of the Federal Reserve System (U.S.), 1935-. "May 15, 1984," G.12.3 Industrial Production (1984-05-15) : 4-4. https://fraser.stlouisfed.org/title/55/item/59679/toc/472833 , accessed on May 1, 2024.