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. "March 1967," Federal Reserve Bulletin (March 1967) : 89-89. https://fraser.stlouisfed.org/title/62/item/21387/toc/347044 , accessed on April 26, 2024.