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-. "February 14, 1992," G.17 Industrial Production and Capacity Utilization (1992-02-14) : 16-17. https://fraser.stlouisfed.org/title/77/item/63600/toc/454966 , accessed on June 1, 2024.