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-. "1984," Annual Statistical Digest (October 1985) : 96-96. https://fraser.stlouisfed.org/title/7/item/23511/toc/37393 , accessed on March 27, 2023.