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-. "March 16, 1978," G.12.3 Industrial Production (1978-03-16) : 17-17. https://fraser.stlouisfed.org/title/55/item/59609/toc/470351 , accessed on April 30, 2024.