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. "March 1963," Federal Reserve Bulletin (March 1963) : 72-72. https://fraser.stlouisfed.org/title/62/item/21339/toc/341080 , accessed on May 7, 2024.