Board of Governors of the Federal Reserve System (U.S.), 1935-. "Gross public debt of the U.S. Treasury-Types and ownership," in Board of Governors of the Federal Reserve System (U.S.), 1935-. "1990-1995," Annual Statistical Digest (November 1996) : 124-124. https://fraser.stlouisfed.org/title/7/item/23501/toc/204602 , accessed on May 14, 2024.