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-. "June 16, 1987," G.12.3 Industrial Production (1987-06-16) : 9-9. https://fraser.stlouisfed.org/title/55/item/59720/toc/473812 , accessed on April 18, 2024.