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-. "August 15, 1985," G.12.3 Industrial Production (1985-08-15) : 4-4. https://fraser.stlouisfed.org/title/55/item/59695/toc/473098 , accessed on May 2, 2024.