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. "November 1972," Federal Reserve Bulletin (November 1972) : 69-69. https://fraser.stlouisfed.org/title/62/item/21455/toc/389558 , accessed on May 7, 2024.