Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "Ownership of United States Government Marketable Securities, by Maturity," in Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "February 1969," Federal Reserve Bulletin (February 1969) : 130-130. https://fraser.stlouisfed.org/title/62/item/21410/toc/194689 , accessed on May 11, 2024.