United States. Bureau of the Budget and United States. Office of Management and Budget. "Executive Office of the President," in United States. Bureau of the Budget and United States. Office of Management and Budget. "Fiscal Year Ending June 30, 1965," Budget of the United States Government (January 21, 1964) : 162-164. https://fraser.stlouisfed.org/title/54/item/19018/toc/235135 , accessed on April 25, 2024.