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. "July 1972," Federal Reserve Bulletin (July 1972) : 132-132. https://fraser.stlouisfed.org/title/62/item/21449/toc/8374 , accessed on March 28, 2024.