Board of Governors of the Federal Reserve System (U.S.), 1935-. "Seasonally Adjusted Indexes," in Board of Governors of the Federal Reserve System (U.S.), 1935-. "May 16, 1978," G.12.3 Industrial Production (1978-05-16) : 16-16. https://fraser.stlouisfed.org/title/55/item/59610/toc/470386 , accessed on April 24, 2024.