Board of Governors of the Federal Reserve System (U.S.), 1935-. "Summary Groupings, Seasonally Adjusted," in Board of Governors of the Federal Reserve System (U.S.), 1935-. "July 18, 1985," G.12.3 Industrial Production (1985-07-18) : 14-14. https://fraser.stlouisfed.org/title/55/item/59694/toc/473089 , accessed on April 24, 2024.