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 16, 1987," G.12.3 Industrial Production (1987-01-16) : 15-15. https://fraser.stlouisfed.org/title/55/item/59715/toc/473721 , accessed on May 10, 2024.