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. "February 1964," Federal Reserve Bulletin (February 1964) : 48-48. https://fraser.stlouisfed.org/title/62/item/21350/toc/104343 , accessed on March 29, 2024.