Board of Governors of the Federal Reserve System (U.S.), 1935-. "Market Groupings, Seasonally Adjusted," in Board of Governors of the Federal Reserve System (U.S.), 1935-. "June 14, 1985," G.12.3 Industrial Production (1985-06-14) : 3-3. https://fraser.stlouisfed.org/title/55/item/59693/toc/473063 , accessed on April 19, 2024.