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 1966," Federal Reserve Bulletin (October 1966) : 44-44. https://fraser.stlouisfed.org/title/62/item/21382/toc/126313 , accessed on March 29, 2024.