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-. "September 14, 1984," G.12.3 Industrial Production (1984-09-14) : 4-4. https://fraser.stlouisfed.org/title/55/item/59683/toc/472899 , accessed on March 29, 2024.