Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "Foreign Exchange Rates," in Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "July 1991," Federal Reserve Bulletin (July 1991) : 192-192. https://fraser.stlouisfed.org/title/62/item/20830/toc/176829 , accessed on April 25, 2024.