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-. "March 16, 1989," G.12.3 Industrial Production (1989-03-16) : 18-18. https://fraser.stlouisfed.org/title/55/item/59746/toc/474506 , accessed on May 13, 2024.