Board of Governors of the Federal Reserve System (U.S.), 1935-. "Industrial Electric Power Use - Not Seasonally Adjusted Indexes," in Board of Governors of the Federal Reserve System (U.S.), 1935-. "June 15, 1979," G.12.3 Industrial Production (1979-06-15) : 15-15. https://fraser.stlouisfed.org/title/55/item/59620/toc/470608 , accessed on May 1, 2024.