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-. "April 15, 1976," G.12.3 Industrial Production (1976-04-15) : 16-17. https://fraser.stlouisfed.org/title/55/item/59589/toc/470055 , accessed on March 28, 2024.