Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "U.S. Balance of Payments," in Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "January 1968," Federal Reserve Bulletin (January 1968) : 165-166. https://fraser.stlouisfed.org/title/62/item/21397/toc/36496 , accessed on May 10, 2024.