Board of Governors of the Federal Reserve System (U.S.), 1935-. "Industry Subtotals and Individual Series, Seasonally Adjusted," in Board of Governors of the Federal Reserve System (U.S.), 1935-. "January 18, 1989," G.12.3 Industrial Production (1989-01-18) : 12-12. https://fraser.stlouisfed.org/title/55/item/59744/toc/474467 , accessed on May 1, 2024.