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. "October 1969," Federal Reserve Bulletin (October 1969) : 118-118. https://fraser.stlouisfed.org/title/62/item/21418/toc/191528 , accessed on April 19, 2024.