Effective December 1, 1958, Series F and G Savings Bonds proceeds can be reinvested in series E and H bonds, November 3, 1958
United States. Department of the Treasury. "Effective December 1, 1958, Series F and G Savings Bonds proceeds can be reinvested in series E and H bonds, November 3, 1958," in United States. Department of the Treasury. "Volume 115," Press Releases of the United States Department of the Treasury (October 2, 1958 - December 31, 1958) : 215-218. https://fraser.stlouisfed.org/title/6111/item/586958/toc/537787 , accessed on June 25, 2024.