Timeline of U.S. Savings Bonds

Year Event
1935 Series A bonds were issued. They were discontinued in December 1935.
1936 Series B bonds were issued. They were discontinued in 1936.
1937 Series C bonds were issued. They were discontinued in 1938.
1939 Series D bonds were issued. They were discontinued in 1941.
1941 Series E, F, and G bonds were issued. Series F and G bonds were discontinued in 1952. The Series E Bonds were discontinued in 1980.
1952 Series H, J, and K bonds were issued. The series J and K bonds were discontinued in 1957. The series H bonds were discontinued in 1979.
1962 September 1962: Taxpayers were offered the option of receiving Series E U.S. savings bonds in lieu of cash tax refunds.
1963 January 1963: U.S. retirement plan bonds were offered, following enactment of Self-Employed Individuals Retirement Tax Act of 1962.
1980 Series EE were issued. HH Bonds were available for cash purchase until 1982.
1982 Sales of U.S. retirement plan bonds were discontinued.
1982 Changed to market-based interest rates for accrual-type Series EE savings bonds. Prior to removing the statutory ceiling on the savings bond rate, Congress had acted numerous times since savings bonds were first sold in 1941 to change that ceiling. The Treasury had changed the rate offered to investors only on a fixed rate basis. Cash sales of current income Series HH savings bonds were discontinued, and they were made available only in exchange for accrual-type savings bonds.
1982 Series HH bonds were obtained only by exchange.  They were discontinued in 2004.
1989 A schedule of final maturity dates for U.S. Savings Bonds was established. Series E savings bonds issued before December 1965 will stop earning interest 40 years from their issue dates. Series E, Series EE and Savings Notes issued after November 1965 will stop earning interest 30 years from their issue dates, as is already the case with Series H bonds. Series HH bonds issued since 1980 will stop earning interest 20 years from their issue dates.
1997 The interest earned on Series EE savings bonds was increased to 90%, from 85%, of the average yields on 5-year Treasury securities, with interest accruing monthly, instead of every six months.
1998 Series I Bonds were issued.