Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "Gross National Product or Expenditure," in Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "May 1955," Federal Reserve Bulletin (May 1955) : 109-109. https://fraser.stlouisfed.org/title/62/item/21245/toc/74972 , accessed on April 20, 2024.