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. "March 1963," Federal Reserve Bulletin (March 1963) : 92-92. https://fraser.stlouisfed.org/title/62/item/21339/toc/341112 , accessed on April 24, 2024.