Board of Governors of the Federal Reserve System (U.S.), 1935-. "Industrial Production: Market Groups," in Board of Governors of the Federal Reserve System (U.S.), 1935-. "June 17, 1997," G.17 Industrial Production and Capacity Utilization (1997-06-17) : 4-5. https://fraser.stlouisfed.org/title/77/item/63667/toc/455886 , accessed on June 14, 2024.