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-. "March 15, 1983," G.12.3 Industrial Production (1983-03-15) : 5-5. https://fraser.stlouisfed.org/title/55/item/59665/toc/472556 , accessed on March 29, 2024.