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-. "June 16, 1965," G.12.3 Industrial Production (1965-06-16) : 3-3. https://fraser.stlouisfed.org/title/55/item/59570/toc/487150 , accessed on May 3, 2024.