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. "April 1963," Federal Reserve Bulletin (April 1963) : 74-74. https://fraser.stlouisfed.org/title/62/item/21340/toc/378414 , accessed on March 29, 2024.