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-. "August 16, 1973 : Errata," G.12.3 Industrial Production (1973-08-16) : 2-2. https://fraser.stlouisfed.org/title/55/item/59540/toc/471447 , accessed on May 4, 2024.