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. "March 1987," Federal Reserve Bulletin (March 1987) : 97-97. https://fraser.stlouisfed.org/title/62/item/20778/toc/403884 , accessed on March 29, 2024.