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-. "January 15, 1988," G.12.3 Industrial Production (1988-01-15) : 18-18. https://fraser.stlouisfed.org/title/55/item/59778/toc/474244 , accessed on May 9, 2024.