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. "June 1970," Federal Reserve Bulletin (June 1970) : 86-86. https://fraser.stlouisfed.org/title/62/item/21426/toc/347487 , accessed on April 23, 2024.