Board of Governors of the Federal Reserve System (U.S.), 1935-. "Electric Power Use: Manufacturing and Mining," in Board of Governors of the Federal Reserve System (U.S.), 1935-. "May 15, 1997," G.17 Industrial Production and Capacity Utilization (1997-05-15) : 16-17. https://fraser.stlouisfed.org/title/77/item/63666/toc/455867 , accessed on March 22, 2023.