Board of Governors of the Federal Reserve System (U.S.), 1935-. "Industry Subtotals and Individual Series, Not Seasonally Adjusted," in Board of Governors of the Federal Reserve System (U.S.), 1935-. "September 16, 1976," G.12.3 Industrial Production (1976-09-16) : 12-14. https://fraser.stlouisfed.org/title/55/item/59523/toc/470111 , accessed on April 26, 2024.