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-. "August 14, 1987," G.12.3 Industrial Production (1987-08-14) : 13-13. https://fraser.stlouisfed.org/title/55/item/59722/toc/473856 , accessed on March 28, 2024.