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-. "March 15, 1974," G.12.3 Industrial Production (1974-03-15) : 2-3. https://fraser.stlouisfed.org/title/55/item/59525/toc/471503 , accessed on April 25, 2024.