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-. "May 14, 1982," G.12.3 Industrial Production (1982-05-14) : 4-4. https://fraser.stlouisfed.org/title/55/item/59655/toc/472376 , accessed on March 29, 2024.