Board of Governors of the Federal Reserve System (U.S.), 1935-. "Industry Subtotals and Individual Series, Seasonally Adjusted," in Board of Governors of the Federal Reserve System (U.S.), 1935-. "October 16, 1973," G.12.3 Industrial Production (1973-10-16) : 6-8. https://fraser.stlouisfed.org/title/55/item/59541/toc/471464 , accessed on April 30, 2024.