Board of Governors of the Federal Reserve System (U.S.), 1935-. "Industry Groupings, Not Seasonally Adjusted," in Board of Governors of the Federal Reserve System (U.S.), 1935-. "July 16, 1976," G.12.3 Industrial Production (1976-07-16) : 11-11. https://fraser.stlouisfed.org/title/55/item/59527/toc/451789 , accessed on April 30, 2024.