Board of Governors of the Federal Reserve System (U.S.), 1935-. "Electric Power Use by Industries, Seasonally Adjusted Indexes," in Board of Governors of the Federal Reserve System (U.S.), 1935-. "August 15, 1986," G.12.3 Industrial Production (1986-08-15) : 18-18. https://fraser.stlouisfed.org/title/55/item/59709/toc/473319 , accessed on April 17, 2024.