Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "Total Nonfarm Business Expenditures on New Plant and Equipment," in Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "December 1980," Federal Reserve Bulletin (December 1980) : 98-98. https://fraser.stlouisfed.org/title/62/item/20472/toc/190528 , accessed on March 28, 2024.