Board of Governors of the Federal Reserve System (U.S.), 1935-. "Industry Groupings, Seasonally Adjusted," in Board of Governors of the Federal Reserve System (U.S.), 1935-. "October 16, 1979," G.12.3 Industrial Production (1979-10-16) : 5-5. https://fraser.stlouisfed.org/title/55/item/59624/toc/470697 , accessed on April 28, 2024.