Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "U.S. Government Marketable Securities - Ownership, by Maturity," in Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "April 1981," Federal Reserve Bulletin (April 1981) : 153-153. https://fraser.stlouisfed.org/title/62/item/20476/toc/385408 , accessed on May 9, 2024.