Federal Reserve Bank of Dallas. "Pamphlets on Savings Bonds, Circular No. 79-107," District Notices (Federal Reserve Bank of Dallas) (June 25, 1979). https://fraser.stlouisfed.org/title/5569/item/542698, accessed on April 5, 2020.
Saving Bond Pamphlet Information on New Savings Bonds and Maturities of Outstanding Bonds. Questions and Answers About the Improved Rates on Saving Bonds.