Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "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. "February 1972," Federal Reserve Bulletin (February 1972) : 158-158. https://fraser.stlouisfed.org/title/62/item/21446/toc/76606 , accessed on May 11, 2024.