Board of Governors of the Federal Reserve System (U.S.), 1935-. "Total Nonfarm Business Expenditures on New Plant and Equipment," in Board of Governors of the Federal Reserve System (U.S.), 1935-. "1986," Annual Statistical Digest (November 1987) : 109-109. https://fraser.stlouisfed.org/title/7/item/23492/toc/288803 , accessed on April 19, 2024.