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-. "July 15, 1965," G.12.3 Industrial Production (1965-07-15) : 2-2. https://fraser.stlouisfed.org/title/55/item/59571/toc/487180 , accessed on April 19, 2024.