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-. "July 14, 1978," G.12.3 Industrial Production (1978-07-14) : 15-15. https://fraser.stlouisfed.org/title/55/item/59612/toc/470423 , accessed on April 23, 2024.