Board of Governors of the Federal Reserve System (U.S.), 1935-. "Industrial Production: Industry Subtotals and Individual Series," in Board of Governors of the Federal Reserve System (U.S.), 1935-. "December 14, 1990," G.17 Industrial Production and Capacity Utilization (1990-12-14) : 12-15. https://fraser.stlouisfed.org/title/77/item/63585/toc/454745 , accessed on May 14, 2024.