Board of Governors of the Federal Reserve System (U.S.), 1935-. "Federal debt subject to statutory limit-Types and ownership," in Board of Governors of the Federal Reserve System (U.S.), 1935-. "1981," Annual Statistical Digest (October 1982) : 101-101. https://fraser.stlouisfed.org/title/7/item/23508/toc/396173 , accessed on April 25, 2024.