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. "February 1957," Federal Reserve Bulletin (February 1957) : 95-95. https://fraser.stlouisfed.org/title/62/item/21266/toc/281724 , accessed on April 25, 2024.