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, 1965," G.12.3 Industrial Production (1965-05-14) : 2-2. https://fraser.stlouisfed.org/title/55/item/59569/toc/487118 , accessed on March 28, 2024.