Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "U.S. Government Marketable and Convertible Securities Outstanding," in Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "November 1967," Federal Reserve Bulletin (November 1967) : 109-109. https://fraser.stlouisfed.org/title/62/item/21395/toc/122925 , accessed on April 19, 2024.