Board of Governors of the Federal Reserve System (U.S.), 1935-. "Industry Subtotals and Individual Series, Not Seasonally Adjusted," in Board of Governors of the Federal Reserve System (U.S.), 1935-. "September 15, 1978," G.12.3 Industrial Production (1978-09-15) : 10-10. https://fraser.stlouisfed.org/title/55/item/59614/toc/470449 , accessed on May 4, 2024.