Board of Governors of the Federal Reserve System (U.S.), 1935-. "Explanatory Note," in Board of Governors of the Federal Reserve System (U.S.), 1935-. "August 15, 1990," G.17 Industrial Production and Capacity Utilization (August 15, 1990) : 18-18. https://fraser.stlouisfed.org/title/77/item/63577/toc/454699 , accessed on May 13, 2024.