Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "Gross Public Debt of U.S. Treasury - Type and Ownership," in Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "April 1987," Federal Reserve Bulletin (April 1987) : 112-112. https://fraser.stlouisfed.org/title/62/item/20779/toc/294008 , accessed on May 9, 2024.