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-. "December 14, 1988," G.12.3 Industrial Production (1988-12-14) : 11-11. https://fraser.stlouisfed.org/title/55/item/59743/toc/474444 , accessed on March 28, 2024.