Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "Estimated Foreign Holdings of Marketable U.S. Treasury Bonds and Notes," in Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "June 1975," Federal Reserve Bulletin (June 1975) : 121-121. https://fraser.stlouisfed.org/title/62/item/21486/toc/198354 , accessed on March 29, 2024.