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-. "July 15, 1987," G.12.3 Industrial Production (1987-07-15) : 9-9. https://fraser.stlouisfed.org/title/55/item/59721/toc/473841 , accessed on May 11, 2024.