Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "Convertible Foreign Currency Held by Federal Reserve Banks," in Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "July 1964," Federal Reserve Bulletin (July 1964) : 50-50. https://fraser.stlouisfed.org/title/62/item/21355/toc/38277 , accessed on July 4, 2024.