United States. Bureau of the Budget and United States. Office of Management and Budget. "Investment in United States Securities by Government - Administered Funds," in United States. Bureau of the Budget and United States. Office of Management and Budget. "Fiscal Year Ending June 30, 1964," Budget of the United States Government (January 17, 1963) : 336-336. https://fraser.stlouisfed.org/title/54/item/19017/toc/269551 , accessed on April 23, 2024.