United States. President and Council of Economic Advisers (U.S.). "U.S. Government Debt - Volume and Kind of Obligation," in United States. President and Council of Economic Advisers (U.S.). "1955," Economic Report of the President (1955) : 197-197. https://fraser.stlouisfed.org/title/45/item/8126/toc/255737 , accessed on May 10, 2024.