United States. Bureau of the Budget and United States. Office of Management and Budget. "Budget of the United States Government," in United States. Bureau of the Budget and United States. Office of Management and Budget. "Fiscal Year Ending June 30, 1967," Budget of the United States Government (January 24, 1966) : 49-49. https://fraser.stlouisfed.org/title/54/item/19020/toc/265722 , accessed on April 26, 2024.