Board of Governors of the Federal Reserve System (U.S.), 1935-. "Seasonally Adjusted and Percentage Change Summary," in Board of Governors of the Federal Reserve System (U.S.), 1935-. "December 14, 1973," G.12.3 Industrial Production (1973-12-14) : 1-2. https://fraser.stlouisfed.org/title/55/item/59536/toc/471475 , accessed on April 26, 2024.