Board of Governors of the Federal Reserve System (U.S.), 1935-. "Chart - Industrial Production Indexes. Total Industry. Manufacturing," in Board of Governors of the Federal Reserve System (U.S.), 1935-. "March 15, 1991," G.17 Industrial Production and Capacity Utilization (1991-03-15) : 3-3. https://fraser.stlouisfed.org/title/77/item/63588/toc/454789 , accessed on April 24, 2024.