Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "Empirical Literature on the U.S. Balance of Trade," in Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "July 1967," Federal Reserve Bulletin (July 1967) : 24-24. https://fraser.stlouisfed.org/title/62/item/21391/toc/221195 , accessed on April 18, 2024.