Board of Governors of the Federal Reserve System (U.S.), 1935-. "Not Seasonally Adjusted Indexes," in Board of Governors of the Federal Reserve System (U.S.), 1935-. "August 15, 1978," G.12.3 Industrial Production (1978-08-15) : 17-17. https://fraser.stlouisfed.org/title/55/item/59613/toc/470435 , accessed on May 1, 2024.