Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "U.S. Government Marketable and Convertible Securities," in Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "January 1971," Federal Reserve Bulletin (January 1971) : 125-125. https://fraser.stlouisfed.org/title/62/item/21434/toc/201108 , accessed on April 19, 2024.