United States. Bureau of the Budget and United States. Office of Management and Budget. "Consolidated Cash Totals and Federal Sector of the National Income Accounts," in United States. Bureau of the Budget and United States. Office of Management and Budget. "Fiscal Year Ending June 30, 1966," Budget of the United States Government (January 25, 1965) : 485-485. https://fraser.stlouisfed.org/title/54/item/19019/toc/108448 , accessed on March 18, 2024.